{"title":"Model Rocket Engines","description":"\u003cp\u003eModel Rocket engines and engine kits.\u003c\/p\u003e","products":[{"product_id":"b6-2-engines","title":"B6-2 Engines","description":"\u003cp\u003eENGINES FOR MODEL ROCKETS\u003c\/p\u003e\u003cp\u003e3 – B6-2 Engines\u003cbr\u003e4 – Starters\u003cbr\u003e4 – Starter Plugs\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003ePLEASE NOTE:\u003c\/strong\u003e You must have a physical address for delivery.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Estes Rockets","offers":[{"title":"Default Title","offer_id":50359816126764,"sku":"EMR-001605","price":11.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/7863\/0444\/files\/file_103f2805-a6fe-44f1-8203-7bfabde3252c.webp?v=1735093282"},{"product_id":"c11-3-engines","title":"C11-3 Engines","description":"\u003cp\u003eENGINES FOR MODEL ROCKETS\u003c\/p\u003e\u003cp\u003e2 – C11-3 Engines\u003cbr\u003e2 – Starters\u003cbr\u003e4 – Starter Plugs\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003ePLEASE NOTE:\u003c\/strong\u003e You must have a physical address for delivery.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Estes Rockets","offers":[{"title":"Default Title","offer_id":50359816159532,"sku":"EMR-001522","price":9.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/7863\/0444\/files\/file_bd73852d-5bc5-4e3f-96b8-f8c4480cbcc5.webp?v=1735093287"},{"product_id":"e12-4-engines","title":"E12-4 Engines","description":"\u003cp\u003eThe Estes E12-4 engine is a proven bestseller in the mid-power category, offering strong performance for model rocketeers ready to step up from smaller engines. With 30.00 N-sec of total impulse and a 4-second delay, it’s a dependable choice for mid-size rockets.\u003c\/p\u003e\n\u003cp\u003eIdeal for hobby shops, the E12-4 appeals to a wide audience of customers who want more altitude and excitement without moving into high-power certification. Stocking this versatile engine helps ensure repeat visits and add-on sales.\u003c\/p\u003e\n\u003cdl\u003e\n\u003cdt\u003eIncludes:\u003c\/dt\u003e\n\u003cdd\u003e- 2 E12-4 Engines\u003c\/dd\u003e\n\u003cdd\u003e- 2 Starters\u003c\/dd\u003e\n\u003cdd\u003e- 4 Starter Plugs\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cdiv data-core-is=\"block\" class=\"ecom-block ecom-core core__block elmspace ecom-3cytodr3g9l\"\u003e\n\u003cdiv data-stopdrag=\"true\" class=\"ecom__element element__heading ecom-element ecom-html\"\u003e\n\u003cdiv\u003e\u003cstrong\u003eOverview\u003c\/strong\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv data-core-is=\"block\" class=\"ecom-block ecom-core core__block elmspace ecom-935yj497y5t short-description\"\u003e\n\u003cdiv class=\"ecom-element ecom-product-single ecom-product-single__description\"\u003e\n\u003cdiv class=\"ecom-product-single__description-wrapper\"\u003e\n\u003cdiv data-show-type=\"full\" class=\"ecom-product-single__description-container\"\u003e\n\u003cdiv class=\"ecom-product-single__description--paragraph\"\u003e\n\u003cdiv class=\"ecom-html-des\"\u003e\n\u003cp\u003eThe Estes E12-4 engine is a strong-selling mid-power option that gives hobbyists the performance they’re looking for in their next launch. With a 24mm diameter and 30.00 N-sec of total impulse, this engine is ideal for customers moving up from smaller C and D engines into more advanced flights. Stocking the E12-4 ensures your shop can meet the demand for reliable, high-performance engines that appeal to both seasoned rocketeers and ambitious beginners.\u003c\/p\u003e\n\u003cp\u003eKnown for its consistency and quality, the E12-4 offers an exciting balance of thrust and flight control. Its 4-second delay is perfectly timed for a wide range of rockets, making it a versatile addition to your engine lineup. Customers appreciate the dependable ignition and smooth flight sequences that Estes engines are famous for, which means they’ll keep coming back to your store for more.\u003c\/p\u003e\n\u003cp\u003eWith a maximum lift weight of 17 ounces, this engine supports a broad selection of mid-size rockets. That versatility makes it a strong recommendation for hobby shop staff helping customers choose the right engine for their rockets. It’s also a great stepping stone for rocketeers eager to try larger engines without moving into high-power certifications, giving your store a product that bridges beginner and advanced flights.\u003c\/p\u003e\n\u003cp\u003eEach E12-4 engine pack includes 2 engines, 2 starters, and 4 starter plugs, ensuring customers get everything they need for multiple launches. Offering the E12-4 in your shop not only boosts sales of engines but also drives repeat purchases of rockets, recovery wadding, and other accessories that complete the launch experience.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv data-core-is=\"block\" class=\"ecom-block ecom-core core__block elmspace ecom-e3ua5tbipi hide-on-mobile\"\u003e\n\u003cdiv data-stopdrag=\"true\" class=\"ecom__element element__heading ecom-element ecom-html\"\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eTotal Impulse: \u003c\/strong\u003e30.00 N-sec\u003cbr\u003e\u003cstrong\u003eTime Delay:\u003c\/strong\u003e 4 Seconds\u003cbr\u003e\u003cstrong\u003eMax Lift Weight:\u003c\/strong\u003e 17.0 oz (482 g)\u003cbr\u003e\u003cstrong\u003eMax Thrust:\u003c\/strong\u003e 30.60 Newtons (6.9 lbs)\u003cbr\u003e\u003cstrong\u003eThrust Duration: \u003c\/strong\u003e2.70 Seconds\u003cbr\u003e\u003cstrong\u003eLength: \u003c\/strong\u003e3.8 in. (9.7 cm)\u003cbr\u003e\u003cstrong\u003eDiameter:\u003c\/strong\u003e 24 mm\u003cbr\u003e\u003cstrong\u003eWeight: \u003c\/strong\u003e2.16 oz. (61.2 g)\u003cbr\u003e\u003cstrong\u003ePropellant Weight: \u003c\/strong\u003e1.3 oz (36.9 g)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eCompatible rockets:\u003c\/strong\u003e\u003cbr\u003ePro Series II Vogel\u003cbr\u003eSaturn 1B\u003cbr\u003eULA Vulcan\u003cbr\u003eAthen H\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eATTENTION:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003cem\u003eEstes Industries, LLC and Echo Six LLC requires all purchasers and users of Estes® Model Rocket Engines to adhere strictly to all applicable local, state, and federal laws, regulations, and safety standards. The user assumes all responsibility for the safe and lawful use of Estes® products. Estes Industries, LLC and Echos Six LLC expressly disclaims any and all liability for personal injury, property damage, or other loss resulting from the misuse, improper handling, or unauthorized application of its model rocket engines.\u003cbr\u003e\u003cbr\u003e\u003c\/em\u003eThese engines cannot be sent to post office boxes. Please be sure to provide a PHYSICAL ADDRESS when purchasing E and F sized engines.\u003c\/p\u003e\n\u003cp\u003eE and F sized engines cannot be shipped to Alaska, Hawaii, Puerto Rico or Guam.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Estes Rockets","offers":[{"title":"Default Title","offer_id":50359816225068,"sku":"EMR-010029","price":27.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/7863\/0444\/files\/010029-E12-4-Engines-Bag.webp?v=1763856631"},{"product_id":"b4-4-engines","title":"ESTES B4-4 Engines","description":"\u003cp\u003eENGINES FOR MODEL ROCKETS\u003c\/p\u003e\u003cp\u003e3 – B4-4 Engines\u003cbr\u003e4 – Starters\u003cbr\u003e4 – Starter Plugs\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003ePLEASE NOTE:\u003c\/strong\u003e You must have a physical address for delivery.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Estes Rockets","offers":[{"title":"Default Title","offer_id":50359816356140,"sku":"EMR-001602","price":11.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/7863\/0444\/files\/file_d07395fe-d5f5-4b07-857a-8d4f2a381cbd.webp?v=1735093416"},{"product_id":"c6-5-engines","title":"C6-5 Engines","description":"\u003cp\u003eENGINES FOR MODEL ROCKETS\u003c\/p\u003e\u003cp\u003e3 – C6-5 Engines\u003cbr\u003e4 – Starters\u003cbr\u003e4 – Starter Plugs\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003ePLEASE NOTE:\u003c\/strong\u003e You must have a physical address for delivery.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Estes Rockets","offers":[{"title":"Default Title","offer_id":50359819206956,"sku":"EMR-001614","price":14.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/7863\/0444\/files\/010024-C6-5-Bag_3ba6343a-39f8-4a6e-bdf3-3bedf8f4d442.webp?v=1765750102"},{"product_id":"c6-5-engine-flight-pack","title":"C6-5 Engine Flight Pack","description":"\u003cp\u003eThe Estes C6-5 Engine Flight Pack has everything you need for three exciting rocket launches 3 engines, 4 starters, 4 plugs, and 12 sheets of recovery wadding. Designed for rockets up to 4 oz, it’s a trusted engine for consistent, high-flying performance.\u003c\/p\u003e\n\u003cp\u003eWhether you're launching for fun or learning the science behind flight, this bundle gives you the gear to launch, recover, and repeat—all in one convenient pack.\u003c\/p\u003e\n\u003cdl\u003e\n\u003cdt\u003eIncludes:\u003c\/dt\u003e\n\u003cdd\u003e- 3 C6-5 Engines\u003c\/dd\u003e\n\u003cdd\u003e- 4 Starters\u003c\/dd\u003e\n\u003cdd\u003e- 4 Starter Plugs\u003c\/dd\u003e\n\u003cdd\u003e- 12 Sheets of Recovery Wadding\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cp\u003e\u003cstrong\u003ePLEASE NOTE:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eYou must have a physical address for delivery.\u003c\/p\u003e\n\u003cdiv class=\"ecom-block ecom-core core__block elmspace ecom-iag81uutdh\"\u003e\n\u003cdiv class=\"ecom__element element__heading ecom-element ecom-html ecom-type-deffault\"\u003e\n\u003ch2 class=\"ecom__heading ecom-db\"\u003eOverview\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ecom-block ecom-core core__block elmspace ecom-bpdbfpj6h6 short-description\"\u003e\n\u003cdiv class=\"ecom-element ecom-product-single ecom-product-single__description\"\u003e\n\u003cdiv class=\"ecom-product-single__description-wrapper\"\u003e\n\u003cdiv class=\"ecom-product-single__description-container\" data-show-type=\"full\"\u003e\n\u003cdiv class=\"ecom-product-single__description--paragraph\"\u003e\n\u003cdiv class=\"ecom-html-des\"\u003e\n\u003cp\u003ePower up your next mission with the Estes C6-5 Engine Flight Pack—your all-in-one bundle for multiple high-flying rocket launches. This versatile engine is designed for single-stage rockets that weigh up to 4 ounces, delivering a strong thrust followed by a 5-second delay for safe recovery deployment. Whether you’re working through your first kit or planning a weekend of back-to-back launches, the C6-5 gives you reliable, consistent performance every time.\u003c\/p\u003e\n\u003cp\u003eEach flight pack includes 3 C6-5 engines, along with 4 starters, 4 reusable plugs, and 12 sheets of flame-resistant recovery wadding—everything you need for three complete flights. No extra purchases or guesswork required. Just prep your rocket, head to the launch field, and let the countdown begin.\u003c\/p\u003e\n\u003cp\u003eThe C6-5 is a go-to engine for intermediate-level rocketeers, ideal for rockets that need a balance between altitude and coast time before deploying a parachute. With proper setup, it can send your rocket soaring hundreds of feet into the sky before triggering recovery at just the right moment.\u003c\/p\u003e\n\u003cp\u003eWhether you're flying solo, with friends, or as part of a local club, this flight pack makes it easy to stay launch-ready. Grab a pack, fuel your next adventure, and experience the thrill of model rocketry with trusted Estes quality in every component.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eATTENTION:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003cem\u003eEstes Industries, LLC and Echo Six LLC requires all purchasers and users of Estes® Model Rocket Engines to adhere strictly to all applicable local, state, and federal laws, regulations, and safety standards. The user assumes all responsibility for the safe and lawful use of Estes® products. Estes Industries, LLC and Echo Six LLC expressly disclaims any and all liability for personal injury, property damage, or other loss resulting from the misuse, improper handling, or unauthorized application of its model rocket engines.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Estes Rockets","offers":[{"title":"Default Title","offer_id":50359823925548,"sku":"EST10056","price":12.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/7863\/0444\/files\/010056-C6-5-FP-Engines-Bag.webp?v=1765749804"},{"product_id":"a8-3-engine-flight-pack-1","title":"A8-3 Engine Flight Pack","description":"\u003cp\u003eThe Estes A8-3 Engine Flight Pack includes 3 engines, 4 starters, 4 plugs, and 12 recovery wadding sheets—everything you need for multiple low-thrust model rocket launches. With a 0.8-second thrust duration and 3-second delay, it’s a perfect fit for lightweight rockets.\u003c\/p\u003e\n\u003cp\u003eReliable, easy to use, and beginner-friendly, this convenient pack keeps your launches smooth and your recovery system protected.\u003c\/p\u003e\n\u003cdl\u003e\n\u003cdt\u003eIncludes:\u003c\/dt\u003e\n\u003cdd\u003e- 3 A8-3 Engines\u003c\/dd\u003e\n\u003cdd\u003e- 4 Starters\u003c\/dd\u003e\n\u003cdd\u003e- 4 Starter Plugs\u003c\/dd\u003e\n\u003cdd\u003e- 12 Sheets of Recovery Wadding\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cp\u003e\u003cstrong\u003ePLEASE NOTE:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eYou must have a physical address for delivery.\u003c\/p\u003e\n\u003cdiv data-core-is=\"block\" class=\"ecom-block ecom-core core__block elmspace ecom-iag81uutdh\"\u003e\n\u003cdiv data-stopdrag=\"true\" class=\"ecom__element element__heading ecom-element ecom-html\"\u003e\n\u003ch2 class=\"ecom__heading ecom-db\"\u003eOverview\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv data-core-is=\"block\" class=\"ecom-block ecom-core core__block elmspace ecom-bpdbfpj6h6 short-description\"\u003e\n\u003cdiv class=\"ecom-element ecom-product-single ecom-product-single__description\"\u003e\n\u003cdiv class=\"ecom-product-single__description-wrapper\"\u003e\n\u003cdiv data-show-type=\"full\" class=\"ecom-product-single__description-container\"\u003e\n\u003cdiv class=\"ecom-product-single__description--paragraph\"\u003e\n\u003cdiv class=\"ecom-html-des\"\u003e\n\u003cp\u003eThe Estes A8-3 Engine Flight Pack is a dependable choice for model rocket enthusiasts of all experience levels. Designed for lightweight rockets, these low-thrust engines provide steady performance with a smooth 3-second delay and reliable ejection charge. Whether you're introducing someone to rocketry or heading out for a casual launch session, the A8-3 delivers consistent, safe results.\u003c\/p\u003e\n\u003cp\u003eThis all-in-one pack comes with everything you need for three complete launches: three A8-3 engines, four starters, four plugs, and 12 sheets of recovery wadding. With an extra starter included and plenty of wadding to protect your rocket’s parachute system, you’ll be set for multiple flights with minimal prep.\u003c\/p\u003e\n\u003cp\u003eEach A8-3 engine features a thrust duration of 0.8 seconds, offering a controlled boost that's perfect for smaller, lightweight rockets. The 3-second delay provides an ideal coast phase before the ejection charge deploys the recovery system, supporting smooth, predictable flight patterns and safe landings.\u003c\/p\u003e\n\u003cp\u003eSimple to prep and easy to fly, the A8-3 Flight Pack makes launching rockets a fun and approachable activity. Whether you’re flying solo, with friends, or introducing kids to the hobby, this pack offers convenience, performance, and peace of mind in every launch.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eATTENTION:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003cem\u003eEstes Industries, LLC and Echo Six LLC requires all purchasers and users of Estes® Model Rocket Engines to adhere strictly to all applicable local, state, and federal laws, regulations, and safety standards. The user assumes all responsibility for the safe and lawful use of Estes® products. Estes Industries, LLC and Echo Six LLC expressly disclaims any and all liability for personal injury, property damage, or other loss resulting from the misuse, improper handling, or unauthorized application of its model rocket engines.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Estes Rockets","offers":[{"title":"Default Title","offer_id":50359824810284,"sku":"EMR-010054","price":12.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/7863\/0444\/files\/010054-A8-3-FP-Engines-Bag.webp?v=1763856910"},{"product_id":"c5-3-engines","title":"Estes Rockets - C5-3 Engines","description":"\u003cp\u003eThe Estes C5-3 engine offers 1.85 seconds of high-thrust performance with a 3-second delay for earlier parachute deployment—ideal for rockets up to 8.0 oz.\u003c\/p\u003e\n\u003cp\u003eIncludes 3 engines, 4 starters, and 4 plugs—perfect for intermediate flyers looking for more control in mid-weight rocket launches.\u003c\/p\u003e\n\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003e3 - C5-3 Engines\u003c\/dd\u003e\n\u003cdd\u003e4 - Starters\u003c\/dd\u003e\n\u003cdd\u003e4 - Starter Plugs\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cp\u003e\u003cstrong\u003ePLEASE NOTE:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eYou must have a physical address for delivery.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv data-core-is=\"block\" class=\"ecom-block ecom-core core__block elmspace ecom-3cytodr3g9l\"\u003e\n\u003cdiv data-stopdrag=\"true\" class=\"ecom__element element__heading ecom-element ecom-html\"\u003e\n\u003cdiv data-core-is=\"block\" class=\"ecom-block ecom-core core__block elmspace ecom-iag81uutdh\"\u003e\n\u003cdiv data-stopdrag=\"true\" class=\"ecom__element element__heading ecom-element ecom-html\"\u003e\n\u003ch2 class=\"ecom__heading ecom-db\"\u003eOverview\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv data-core-is=\"block\" class=\"ecom-block ecom-core core__block elmspace ecom-bpdbfpj6h6 short-description\"\u003e\n\u003cdiv class=\"ecom-element ecom-product-single ecom-product-single__description\"\u003e\n\u003cdiv class=\"ecom-product-single__description-wrapper\"\u003e\n\u003cdiv data-show-type=\"full\" class=\"ecom-product-single__description-container\"\u003e\n\u003cdiv class=\"ecom-product-single__description--paragraph\"\u003e\n\u003cdiv class=\"ecom-html-des\"\u003e\n\u003cp\u003eWhen your rocket needs a fast, steady boost and an earlier recovery, the Estes C5-3 engine delivers. With a total impulse of 10.00 N-sec and a thrust duration of 1.85 seconds, this 18 mm engine is engineered to provide a longer, sustained push off the launch pad—making it a strong match for mid-weight rockets and high-drag designs.\u003c\/p\u003e\n\u003cp\u003eThe 3-second delay ensures timely recovery system deployment, which is especially important for rockets with a max lift weight of up to 8.0 oz. That shorter delay window minimizes coast time and helps deploy parachutes earlier in the flight arc, leading to safer, more predictable landings—perfect for designs that don't benefit from long coasts or for flying in variable wind conditions.\u003c\/p\u003e\n\u003cp\u003eEach pack contains 3 C5-3 engines, 4 starters, and 4 starter plugs, giving you everything you need to prep for multiple launches. Just add your recovery wadding, launch pad, and controller, and you’re ready for a high-thrust experience backed by Estes’ consistent engine quality and safety.\u003c\/p\u003e\n\u003cp\u003eWhether you're testing new rocket configurations or simply want tighter control over recovery timing, the C5-3 engine offers a reliable balance of power and performance. It’s a go-to choice for intermediate rocketeers looking to expand their engine lineup with something both powerful and precise.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eCompatible Rockets\u003c\/strong\u003e\u003cbr\u003eSolo\u003cbr\u003eNASA SLS\u003cbr\u003eSpaceX Falcon 9\u003cbr\u003eRoto Rocket\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv data-core-is=\"block\" class=\"ecom-block ecom-core core__block elmspace ecom-935yj497y5t short-description\"\u003e\n\u003cdiv class=\"ecom-element ecom-product-single ecom-product-single__description\"\u003e\n\u003cdiv class=\"ecom-product-single__description-wrapper\"\u003e\n\u003cdiv data-show-type=\"full\" class=\"ecom-product-single__description-container\"\u003e\n\u003cdiv class=\"ecom-product-single__description--paragraph\"\u003e\n\u003cdiv class=\"ecom-html-des\"\u003e\n\u003cp\u003e\u003cstrong\u003eATTENTION:\u003c\/strong\u003e\u003cspan\u003e \u003cem\u003eEstes Industries, LLC and Echo Six LLC requires all purchasers and users of Estes® Model Rocket Engines to adhere strictly to all applicable local, state, and federal laws, regulations, and safety standards. The user assumes all responsibility for the safe and lawful use of Estes® products. Estes Industries, LLC and Echo Six LLC expressly disclaims any and all liability for personal injury, property damage, or other loss resulting from the misuse, improper handling, or unauthorized application of its model rocket engines.\u003c\/em\u003e\u003c\/span\u003eResidents of California, New Jersey, Rhode Island and North Dakota please review the Terms of Sale for state specific restrictions or\u003cspan\u003e \u003c\/span\u003e\u003ca rel=\"noopener noreferrer\" href=\"https:\/\/b2b.estesrockets.com\/pages\/state-regulations\" target=\"_blank\"\u003eClick Here for State Specific Restrictions\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Estes Rockets","offers":[{"title":"Default Title","offer_id":51090679726380,"sku":"EMR-001617","price":13.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/7863\/0444\/files\/010022-C5-3-Engines-Bag.webp?v=1763859210"},{"product_id":"a3-4t-engines","title":"ESTES A3-4T Engines","description":"\u003cp\u003eThe Estes A3-4T is a mini single-stage engine built for rockets up to 2.0 ounces—ideal for hobby and specialty retail. With a peak thrust of 6.80 newtons and a 4-second delay, it delivers consistent performance for lightweight rocket flights.\u003c\/p\u003e\n\u003cp\u003eEach retail pack includes four engines, four starters, and four starter plugs—offering a convenient, all-in-one engine option for customers seeking dependable Estes quality.\u003c\/p\u003e\n\u003cdl\u003e\n\u003cdt\u003eIncludes:\u003c\/dt\u003e\n\u003cdd\u003e- 4 A3-4T Engines\u003c\/dd\u003e\n\u003cdd\u003e- 4 Starters\u003c\/dd\u003e\n\u003cdd\u003e- 4 Starter Plugs\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cp\u003e\u003cstrong\u003ePLEASE NOTE:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eYou must have a physical address for delivery.\u003c\/p\u003e\n\u003cdiv class=\"ecom-block ecom-core core__block elmspace ecom-3cytodr3g9l\" data-core-is=\"block\"\u003e\n\u003cdiv class=\"ecom__element element__heading ecom-element ecom-html\" data-stopdrag=\"true\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"ecom-block ecom-core core__block elmspace ecom-3cytodr3g9l\"\u003e\n\u003cdiv class=\"ecom__element element__heading ecom-element ecom-html ecom-type-deffault\"\u003e\n\u003cdiv\u003eOverview\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ecom-block ecom-core core__block elmspace ecom-935yj497y5t short-description\"\u003e\n\u003cdiv class=\"ecom-element ecom-product-single ecom-product-single__description\"\u003e\n\u003cdiv class=\"ecom-product-single__description-wrapper\"\u003e\n\u003cdiv class=\"ecom-product-single__description-container\" data-show-type=\"full\"\u003e\n\u003cdiv class=\"ecom-product-single__description--paragraph\"\u003e\n\u003cdiv class=\"ecom-html-des\"\u003e\n\u003cp\u003eThe Estes A3-4T engine is a mini single-stage model rocket engine designed for lightweight rockets, making it a valuable addition to any retail model rocketry lineup. With a total impulse of 2.50 N-sec and a peak thrust of 6.80 newtons (1.5 lbs), this 13 mm diameter engine delivers consistent, reliable performance for rockets up to 2.0 ounces (57 g). The 4-second delay before ejection provides hobbyists with dependable recovery system deployment and stable flight paths.\u003c\/p\u003e\n\u003cp\u003eWith a thrust duration of 0.60 seconds, the A3-4T is ideal for rockets requiring moderate thrust and a longer coast phase before ejection. Its predictable performance and proven reliability make it a popular choice among model rocketeers, offering retailers a strong-selling option for customers flying lightweight rockets with mini engines.\u003c\/p\u003e\n\u003cp\u003eEach retail pack contains four A3-4T engines, four starters, and four starter plugs—providing a complete launch solution for consumers. The inclusion of starters and plugs simplifies purchasing and makes these packs an easy choice for hobby shops looking to offer all-in-one solutions on their shelves. With trusted Estes quality, these retail-ready packs support both individual sales and repeat purchases.\u003c\/p\u003e\n\u003cp\u003eThe A3-4T engine’s balanced thrust, consistent performance, and convenient packaging make it a reliable, high-turn product for retailers stocking model rocketry essentials. Backed by Estes’ reputation for quality, it’s a proven engine choice that supports customer satisfaction and store loyalty.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eATTENTION:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003cem\u003eEstes Industries, LLCand Echo Six LLC requires all purchasers and users of Estes® Model Rocket Engines to adhere strictly to all applicable local, state, and federal laws, regulations, and safety standards. The user assumes all responsibility for the safe and lawful use of Estes® products. Estes Industries, LLC and Echo Six LLC expressly disclaims any and all liability for personal injury, property damage, or other loss resulting from the misuse, improper handling, or unauthorized application of its model rocket engines.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ecom-block ecom-core core__block elmspace ecom-935yj497y5t short-description\" data-core-is=\"block\"\u003e\n\u003cdiv class=\"ecom-element ecom-product-single ecom-product-single__description\"\u003e\n\u003cdiv class=\"ecom-product-single__description-wrapper\"\u003e\n\u003cdiv class=\"ecom-product-single__description-container\" data-show-type=\"full\"\u003e\n\u003cdiv class=\"ecom-product-single__description--paragraph\"\u003e\n\u003cdiv class=\"ecom-html-des\"\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eTechnical Specifications:\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eTotal Impulse:\u003c\/strong\u003e\u003cbr\u003e2.50 N-sec\u003cbr\u003e\u003cstrong\u003eLength:\u003c\/strong\u003e\u003cbr\u003e1.8 in. (4.6 cm)\u003cbr\u003e\u003cstrong\u003eTime Delay:\u003c\/strong\u003e\u003cbr\u003e4 Seconds\u003cbr\u003e\u003cstrong\u003eDiameter:\u003c\/strong\u003e\u003cbr\u003e13 mm\u003cbr\u003e\u003cstrong\u003eMax Lift Weight:\u003cbr\u003e\u003c\/strong\u003e2.0 oz. (57 g)\u003cbr\u003e\u003cstrong\u003eWeight:\u003cbr\u003e\u003c\/strong\u003e.28 oz. (7.9 g)\u003cbr\u003e\u003cstrong\u003eMax Thrust:\u003c\/strong\u003e\u003cbr\u003e6.80 Newtons (1.5 lbs)\u003cbr\u003e\u003cstrong\u003ePropellant Weight:\u003cbr\u003e\u003c\/strong\u003e0.12 oz. (3.3 g)\u003cbr\u003e\u003cstrong\u003eThrust Duration:\u003c\/strong\u003e\u003cbr\u003e0.60 Seconds\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eCompatible Rockets:\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv class=\"related-product\"\u003e\n\u003cdiv class=\"related-product-image\"\u003e\u003cimg src=\"https:\/\/b2b.estesrockets.com\/cdn\/shop\/products\/7303_StarHopper_BagRocket_medium.png?v=1692731719\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"related-product-name\"\u003e\u003ca href=\"https:\/\/www.echosixhobbies.com\/collections\/kits\/products\/star-hopper%E2%84%A2\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003eStar Hopper™\u003c\/span\u003e\u003c\/a\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"related-product\"\u003e\n\u003cdiv class=\"related-product-name\"\u003e\n\u003cdiv class=\"related-product\"\u003e\n\u003ca href=\"https:\/\/b2b.estesrockets.com\/products\/space-corps-lunar-scout-rocket\"\u003e\n\u003cdiv class=\"related-product-image\"\u003e\u003cimg src=\"https:\/\/b2b.estesrockets.com\/cdn\/shop\/products\/7290047776072909PT01_medium.jpg?v=1692731555\"\u003e\u003c\/div\u003e\n\u003c\/a\u003e\n\u003cdiv class=\"related-product-name\"\u003e\u003ca href=\"https:\/\/www.echosixhobbies.com\/collections\/kits\/products\/space-corps%E2%84%A2-lunar-scout%E2%84%A2\"\u003eSpace Corps™ Lunar Scout™\u003c\/a\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ca href=\"https:\/\/b2b.estesrockets.com\/products\/mini-honest-john\"\u003e\n\u003cdiv class=\"related-product\"\u003e\n\u003cdiv class=\"related-product-image\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"related-product\"\u003e\n\u003cdiv class=\"related-product-image\"\u003e\u003cimg src=\"https:\/\/b2b.estesrockets.com\/cdn\/shop\/products\/2446047776024465PT05_medium.jpg?v=1692730398\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"related-product-name\"\u003e\u003ca href=\"https:\/\/www.echosixhobbies.com\/collections\/kits\/products\/mini-honest-john\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003eMini Honest John\u003c\/span\u003e\u003c\/a\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Estes Rockets","offers":[{"title":"Default Title","offer_id":51204312039724,"sku":"EMR-010013","price":16.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/7863\/0444\/files\/010013-A3-4T-Bag.webp?v=1768055977"},{"product_id":"a3-6t-engines","title":"A3-6T Engines","description":"\u003cp\u003eThe Estes A3-6T mini engine delivers smooth, reliable performance and a thrilling flight experience for small rockets. With a six second delay built into the motor, your rocket will coast at apogee longer before recovery begins, giving you more time to watch the flight and enjoy the peak altitude.\u003c\/p\u003e\n\u003cp\u003eBuilt to the exacting standards hobbyists expect from Estes, the A3-6T gives consistent thrust and dependable delays so your launches stay predictable and fun. Ideal for backyard flyers and club events, these mini motors pair nicely with popular kits like the Star Hopper, The Gnome, the Gryphon, and the Mini Honest John.\u003c\/p\u003e\n\u003cdl\u003e\n\u003cdt\u003eIncludes:\u003c\/dt\u003e\n\u003cdd\u003e4 × A3-6T Engines\u003c\/dd\u003e\n\u003cdd\u003e4 × Starters\u003c\/dd\u003e\n\u003cdd\u003e4 × Starter Plugs\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cp\u003e\u003cstrong\u003ePLEASE NOTE:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eYou must have a physical address for delivery.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv data-core-is=\"block\" class=\"ecom-block ecom-core core__block elmspace ecom-3cytodr3g9l\"\u003e\n\u003cdiv data-stopdrag=\"true\" class=\"ecom__element element__heading ecom-element ecom-html\"\u003e\n\u003cdiv\u003e\u003cstrong\u003eOverview\u003c\/strong\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv data-core-is=\"block\" class=\"ecom-block ecom-core core__block elmspace ecom-935yj497y5t short-description\"\u003e\n\u003cdiv class=\"ecom-element ecom-product-single ecom-product-single__description\"\u003e\n\u003cdiv class=\"ecom-product-single__description-wrapper\"\u003e\n\u003cdiv data-show-type=\"full\" class=\"ecom-product-single__description-container\"\u003e\n\u003cdiv class=\"ecom-product-single__description--paragraph\"\u003e\n\u003cdiv class=\"ecom-html-des\"\u003e\n\u003cp\u003eExperience better sight lines and a calmer recovery with the Estes A3-6T mini rocket engine. This 13mm motor is tuned to deliver a short, energetic boost followed by a six second delay, so your model reaches its highest point and then pauses before the recovery system activates. The result is a cleaner, more dramatic flight that is easy to track from the ground.\u003c\/p\u003e\n\u003cp\u003eWhat makes the A3-6T stand out is its consistency. Estes engines are manufactured and tested to provide repeatable thrust curves and predictable delay times, which means fewer surprises on launch day and more confidence when flying with friends or family. That steady performance helps new flyers learn timing and recovery and gives experienced hobbyists the reliability they need to plan flights precisely.\u003c\/p\u003e\n\u003cp\u003eOn the pad the A3-6T feels familiar and safe: a crisp ignition, a confident boost, and a gentle coast that showcases both altitude and stability. It is an excellent choice for lightweight rockets and small payload lofts where visibility and controlled recovery matter. Use it with many of our mini-friendly kits to get the most out of your neighborhood launches or club meetups.\u003c\/p\u003e\n\u003cp\u003eEach retail pack includes four A3-6T engines and the simple accessories you need to get flying. If you want predictable, fun flights that are easy to track and recover, the A3-6T is a dependable mini motor to add to your launch bag.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eATTENTION:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003cem\u003eEstes Industries, LLC and Echo Six LLC requires all purchasers and users of Estes® Model Rocket Engines to adhere strictly to all applicable local, state, and federal laws, regulations, and safety standards. The user assumes all responsibility for the safe and lawful use of Estes® products. Estes Industries, LLC and Echo Six LLC expressly disclaims any and all liability for personal injury, property damage, or other loss resulting from the misuse, improper handling, or unauthorized application of its model rocket engines.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eTotal Impulse: 2.50N-sec\u003cbr\u003eLength: 1.8 in. (4.57 cm)\u003cbr\u003eTime Delay 6 Seconds\u003cbr\u003eDiameter: 132 mm\u003cbr\u003eMax Lift Weight: 2.0 oz (57 g)\u003cbr\u003eWeight 0.27 oz (3.3 g)\u003cbr\u003eThrust Duratioion: 0.60 Seconds\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv class=\"ecom-block ecom-core core__block elmspace ecom-ats7vkd99e\" data-core-is=\"block\"\u003e\n\u003cdiv class=\"ecom__element element__heading ecom-element ecom-html\" data-stopdrag=\"true\"\u003e\n\u003ch3 class=\"ecom__heading ecom-db\"\u003eCompatible Rockets:\u003c\/h3\u003e\n\u003cp\u003eStar Hopper\u003cbr\u003eMini Honest John\u003cbr\u003eGryphon\u003cbr\u003eGnome\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ecom-block ecom-core core__block elmspace ecom-c64xn0xfhp6\" data-core-is=\"row\"\u003e\n\u003cdiv class=\"ecom-row ecom-core core__block ecom-pybajeifcnk\" data-id=\"ecom-pybajeifcnk\" data-notice-content=\"This image is for preview only\"\u003e\n\u003cdiv data-deep=\"2\" class=\"core__row--columns\"\u003e\n\u003cdiv class=\"ecom-column ecom-core core__column--first core__column--last ecom-wgo6nm1o3d8\"\u003e\n\u003cdiv class=\"core__column--wrapper\"\u003e\n\u003cdiv class=\"ecom-column__overlay\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Estes Rockets","offers":[{"title":"Default Title","offer_id":51204406804780,"sku":"EST1508","price":11.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/7863\/0444\/files\/1000x1000_1508_A3-6T.webp?v=1749748380"},{"product_id":"a3-2t-engines","title":"Estes Rockets - A3-2T Model Rocket Engines, (4pk)","description":"\u003cp\u003eThe Estes A3-2T mini engine is a specially produced, 13mm model rocket engine that has a 2-second delay. Enjoy watching your rocket soar at its highest heights for an extra 2 seconds before it starts the descent with this incredible mini engine. Each package includes 4 engines, 4 starters, and 4 mini starter plugs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePLEASE NOTE:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eYou must have a physical address for delivery.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv data-core-is=\"block\" class=\"ecom-block ecom-core core__block elmspace ecom-3cytodr3g9l\"\u003e\n\u003cdiv data-stopdrag=\"true\" class=\"ecom__element element__heading ecom-element ecom-html\"\u003e\n\u003cdiv class=\"ecom-block ecom-core core__block elmspace ecom-3cytodr3g9l\" data-core-is=\"block\"\u003e\n\u003cdiv class=\"ecom__element element__heading ecom-element ecom-html\" data-stopdrag=\"true\"\u003e\n\u003cdiv\u003e\u003cstrong\u003eOverview\u003c\/strong\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ecom-block ecom-core core__block elmspace ecom-935yj497y5t short-description\" data-core-is=\"block\"\u003e\n\u003cdiv class=\"ecom-element ecom-product-single ecom-product-single__description\"\u003e\n\u003cdiv class=\"ecom-product-single__description-wrapper\"\u003e\n\u003cdiv class=\"ecom-product-single__description-container\" data-show-type=\"full\"\u003e\n\u003cdiv class=\"ecom-product-single__description--paragraph\"\u003e\n\u003cdiv class=\"ecom-html-des\"\u003e\n\u003cp\u003eThe Estes A3-2T is a specially produced, 13mm model rocket engine that has a 2-second delay. Enjoy watching your rocket soar at its highest heights for 2 seconds longer before it starts the descent with this incredible mini engine. Use this engine with more than 15 of our rockets including the Star Hopper, The Gnome, The Firestreak, the Gryphon, the Mini Honest John, and more! Each package includes 4 engines, 4 starters, and 4 mini starter plugs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eATTENTION:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eResidents of California, New Jersey, Rhode Island and North Dakota please review the Terms of Sale for state specific restrictions or\u003cspan\u003e \u003c\/span\u003e\u003ca rel=\"noopener noreferrer\" href=\"https:\/\/b2b.estesrockets.com\/pages\/state-regulations\" target=\"_blank\"\u003eClick Here for State Specific Restrictions\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv data-core-is=\"block\" class=\"ecom-block ecom-core core__block elmspace ecom-935yj497y5t short-description\"\u003e\n\u003cdiv class=\"ecom-element ecom-product-single ecom-product-single__description\"\u003e\n\u003cdiv class=\"ecom-product-single__description-wrapper\"\u003e\n\u003cdiv data-show-type=\"full\" class=\"ecom-product-single__description-container\"\u003e\n\u003cdiv class=\"ecom-product-single__description--paragraph\"\u003e\n\u003cdiv class=\"ecom-html-des\"\u003e\n\u003cp\u003e\u003cbr\u003eTotal Impulse: 2.50N-sec\u003cbr\u003eLength: 1.8 in. (4.57 cm)\u003cbr\u003eTime Delay 2 Seconds\u003cbr\u003eDiameter: 13 mm\u003cbr\u003eMax Lift Weight: 2.0 oz (57 g)\u003cbr\u003eWeight: 0.27 oz (3.3 g)\u003cbr\u003eMax Thrust: 6.80 Newtons _1.5 lbs)\u003cbr\u003ePropellant Weight: 0.12 oz (3.3 g)\u003cbr\u003eThrust Duratioion: 0.60 Seconds\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv class=\"ecom-block ecom-core core__block elmspace ecom-ats7vkd99e\" data-core-is=\"block\"\u003e\n\u003cdiv class=\"ecom__element element__heading ecom-element ecom-html\" data-stopdrag=\"true\"\u003e\n\u003ch3 class=\"ecom__heading ecom-db\"\u003eCompatible Rockets:\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.echosixhobbies.com\/collections\/kits\/products\/star-hopper%E2%84%A2\"\u003eStar Hopper\u003c\/a\u003e\u003cbr\u003eGryphon\u003cbr\u003eGnome\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ecom-block ecom-core core__block elmspace ecom-c64xn0xfhp6\" data-core-is=\"row\"\u003e\n\u003cdiv class=\"ecom-row ecom-core core__block ecom-pybajeifcnk\" data-id=\"ecom-pybajeifcnk\" data-notice-content=\"This image is for preview only\"\u003e\n\u003cdiv data-deep=\"2\" class=\"core__row--columns\"\u003e\n\u003cdiv class=\"ecom-column ecom-core core__column--first core__column--last ecom-wgo6nm1o3d8\"\u003e\n\u003cdiv class=\"core__column--wrapper\"\u003e\n\u003cdiv class=\"ecom-column__overlay\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Estes Rockets","offers":[{"title":"Default Title","offer_id":51204407492908,"sku":"EMR-001506","price":11.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/7863\/0444\/files\/est10012.jpg?v=1773753768"},{"product_id":"bt-65-29mm-engine-mount-kit","title":"Estes - BT-65 29mm Engine Mount Kit","description":"\u003cp\u003eThick walled, white colored engine mount tube. Used for all 29 mm diameter motors. Dimensions for ID is 1.140 inches and OD is 1.210 inches. Package includes 3 laser cut BT 65 centering rings, 1 Engine mount tube, and 1 29mm engine retainer.\u003c\/p\u003e\n\u003cp\u003e• Used for 29 mm model rocket engines\u003c\/p\u003e\n\u003cp\u003e• 8 inches (20.32 cm) in length\u003c\/p\u003e","brand":"Estes Rockets","offers":[{"title":"Default Title","offer_id":51204432494892,"sku":"EMR-009742","price":10.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/7863\/0444\/files\/3159_product_acd0d2c3-9d35-4f5a-bf5d-6a327461839c.webp?v=1749749303"},{"product_id":"bt-65-29mm-engine-mount-kit-copy","title":"Estes Rockets - BT-60 29mm Engine Mount Kit","description":"\u003cdiv\u003e\n\u003cspan\u003eThick walled, white colored engine mount tube. Used for all 29 mm diameter motors. Dimensions for ID is  1.140 inches and OD is 1.210 inches. Package includes 3 laser cut BT 60 centering rings, 1 Engine mount tube, and 1 29mm engine retainer.\u003c\/span\u003e\u003cspan data-ccp-props='{\"201341983\":0,\"335551550\":1,\"335551620\":1,\"335559739\":160,\"335559740\":259}'\u003e \u003c\/span\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cp\u003e• Used for 29 mm model rocket engines\u003c\/p\u003e\n\u003cp\u003e• 8 inches (20.32 cm) in length\u003c\/p\u003e","brand":"Estes Rockets","offers":[{"title":"Default Title","offer_id":51204433412396,"sku":"EMR-009741","price":10.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/7863\/0444\/files\/3159_product.webp?v=1749749575"},{"product_id":"startech™-starters","title":"Estes Rockets - STARTECH™ Starters","description":"\u003cp\u003eThe new StarTech starters stay true to the design of the original, with one key addition. The small nichrome wire, the one that heats the propellant at launch, has been dipped in a specially crafted chemical compound that reacts with the heat of the wire to create a large burst of heat and pressure that ensures ignition. Never misfire again! Includes 6 starters.\u003c\/p\u003e\n\u003cp\u003e60 years ago, Vern Estes released the first commercially available model rocket motors. With it, came the Estes Starters that we all know and love. They've fueled the hobby for decades and are responsible for safer model rocket launches than any starter in history. When it came time to update this technology, we wanted to stay true to the simple design that made the Estes starters and motors a legendary combination, we just wanted to kick it up a notch! The new StarTech starters stay true to the design of the original, with one key addition. The small nichrome wire, the one that heats the propellant at launch, has been dipped in a specially crafted chemical compound that reacts with the heat of the wire to create a large burst of heat and pressure that ensures ignition. Never misfire again!\u003c\/p\u003e","brand":"Estes Rockets","offers":[{"title":"Default Title","offer_id":51204559765804,"sku":"EMR-002303","price":6.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/7863\/0444\/files\/2303_StartechStarters.webp?v=1749759916"},{"product_id":"b6-4-engines-1","title":"Estes Rockets - B6-4 Engines (3pk)","description":"\u003cp\u003eThe Estes B6-4 engine is a versatile and dependable choice for launching standard-size model rockets. Designed for rockets weighing less than 4.0 ounces, it provides a solid boost with a 4-second delay for smooth parachute deployment.\u003c\/p\u003e\n\u003cp\u003eIdeal for beginner to intermediate rocketeers, the B6-4 delivers a balanced combination of altitude and recovery timing—perfect for educational launches, club events, or weekend flights.\u003c\/p\u003e\n\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003e- 3 B6-4 Engines\u003c\/dd\u003e\n\u003cdd\u003e- 4 Starters\u003c\/dd\u003e\n\u003cdd\u003e- 4 Starter Plugs\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cp\u003e\u003cstrong\u003ePLEASE NOTE:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eYou must have a physical address for delivery.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eB6-4 Rocket Engine 3-Pack is best used in the rocket kits below -\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e0651 Der Red Max\u003c\/li\u003e\n\u003cli\u003e1225 Alpha\u003c\/li\u003e\n\u003cli\u003e1256 Alpha III\u003c\/li\u003e\n\u003cli\u003e1261 Baby Bertha\u003c\/li\u003e\n\u003cli\u003e1292 Wizard\u003c\/li\u003e\n\u003cli\u003e1329 Multi-Roc\u003c\/li\u003e\n\u003cli\u003e1946 Boosted Bertha\u003c\/li\u003e\n\u003cli\u003e1948 Big Bertha\u003c\/li\u003e\n\u003cli\u003e1949 Viking\u003c\/li\u003e\n\u003cli\u003e2008 Generic E2X\u003c\/li\u003e\n\u003cli\u003e2021 Cadet\u003c\/li\u003e\n\u003cli\u003e2056 US Army Patriot\u003c\/li\u003e\n\u003cli\u003e2092 Mongoose\u003c\/li\u003e\n\u003cli\u003e2113 Starbase\u003c\/li\u003e\n\u003cli\u003e2126 Tech-Pak\u003cbr\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"ecom-block ecom-core core__block ecom-ats7vkd99e\"\u003e\n\u003cdiv class=\"ecom__element element__heading ecom-element ecom-html ecom-type-deffault\"\u003e\n\u003ch3 class=\"ecom__heading ecom-db\"\u003eCompatible Rockets\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ecom-block ecom-core core__block elmspace ecom-c64xn0xfhp6\"\u003e\n\u003cdiv data-id=\"ecom-pybajeifcnk\" class=\"ecom-row ecom-core core__block ecom-pybajeifcnk\"\u003e\n\u003cdiv class=\"core__row--columns\"\u003e\n\u003cdiv class=\"ecom-column ecom-core core__column--first core__column--last ecom-wgo6nm1o3d8\"\u003e\n\u003cdiv id=\"ecom-wgo6nm1o3d8\" class=\"core__column--wrapper\"\u003e\n\u003cdiv class=\"ecom-column__overlay\"\u003e\n\u003cdiv class=\"ecom-overlay\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"core__blocks\"\u003e\n\u003cdiv class=\"core__blocks--body\"\u003e\n\u003cdiv class=\"ecom-block ecom-core core__block elmspace ecom-jq45q9s2nf\"\u003e\n\u003cdiv class=\"ecom__element ecom-element element__code exporting\"\u003e\n\u003cdiv class=\"related-products-wrapper\"\u003e\n\u003cdiv class=\"related-product-list\"\u003e\n\u003cdiv class=\"related-product\"\u003e\n\u003ca class=\"samitaLock-item\" href=\"https:\/\/b2b.estesrockets.com\/products\/rascal-hijinks-launch-set\"\u003e\n\u003cdiv class=\"related-product-image\"\u003e\u003cimg src=\"https:\/\/b2b.estesrockets.com\/cdn\/shop\/files\/1499047776014992PT08_medium.jpg?v=1716492694\"\u003e\u003c\/div\u003e\n\u003c\/a\u003e\n\u003cdiv class=\"related-product-name\"\u003e\u003ca rel=\"noopener\" title=\"Rascal and Hyjinks model rocket launch set\" href=\"https:\/\/www.echosixhobbies.com\/collections\/launch-sets\/products\/tandem-x-launch-set-copy\" target=\"_blank\"\u003eRascal™ \u0026amp; HiJinks™ Launch Set\u003c\/a\u003e\u003c\/div\u003e\n\u003ca class=\"samitaLock-item\" href=\"https:\/\/b2b.estesrockets.com\/products\/rascal-hijinks-launch-set\"\u003e\u003cform data-pd-style-i-d=\"pd-style-r6ovh319pf\" class=\"pd-style-r6ovh319pf\" action=\"https:\/\/b2b.estesrockets.com\/cart\/add\" method=\"post\"\u003e\u003c\/form\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"related-product\"\u003e\n\u003ca class=\"samitaLock-item\" href=\"https:\/\/b2b.estesrockets.com\/products\/hi-flier\"\u003e\n\u003cdiv class=\"related-product-image\"\u003e\u003cimg src=\"https:\/\/b2b.estesrockets.com\/cdn\/shop\/files\/2178-Hi-Flier-Model-Rocket-Kit_medium.png?v=1765563986\"\u003e\u003c\/div\u003e\n\u003c\/a\u003e\n\u003cdiv class=\"related-product-name\"\u003e\u003ca rel=\"noopener\" title=\"Estes Hi Flier model rocket kit\" href=\"https:\/\/www.echosixhobbies.com\/collections\/kits\/products\/hi-flier-model-rocket-kit-skill-level-1\" target=\"_blank\"\u003eHi-Flier®\u003c\/a\u003e\u003c\/div\u003e\n\u003ca class=\"samitaLock-item\" href=\"https:\/\/b2b.estesrockets.com\/products\/hi-flier\"\u003e\u003cform data-pd-style-i-d=\"pd-style-xox7l6rtdib\" class=\"pd-style-xox7l6rtdib\" action=\"https:\/\/b2b.estesrockets.com\/cart\/add\" method=\"post\"\u003e\u003c\/form\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"related-product\"\u003e\n\u003ca class=\"samitaLock-item\" href=\"https:\/\/b2b.estesrockets.com\/products\/tandem-x-launch-set\"\u003e\n\u003cdiv class=\"related-product-image\"\u003e\u003cimg src=\"https:\/\/b2b.estesrockets.com\/cdn\/shop\/products\/1469047776014695PT02_medium.jpg?v=1692729811\"\u003e\u003c\/div\u003e\n\u003c\/a\u003e\n\u003cdiv class=\"related-product-name\"\u003e\u003ca rel=\"noopener\" title=\"Estes Tandem-X Model Rocket Launch Set\" href=\"https:\/\/www.echosixhobbies.com\/collections\/launch-sets\/products\/tandem-x-launch-set\" target=\"_blank\"\u003eTandem-X Launch Set\u003c\/a\u003e\u003c\/div\u003e\n\u003ca class=\"samitaLock-item\" href=\"https:\/\/b2b.estesrockets.com\/products\/tandem-x-launch-set\"\u003e\u003cform data-pd-style-i-d=\"pd-style-zh4szisnixi\" class=\"pd-style-zh4szisnixi\" action=\"https:\/\/b2b.estesrockets.com\/cart\/add\" method=\"post\"\u003e\u003c\/form\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"related-product\"\u003e\n\u003ca class=\"samitaLock-item\" href=\"https:\/\/b2b.estesrockets.com\/products\/alpha-iii\"\u003e\n\u003cdiv class=\"related-product-image\"\u003e\u003cimg src=\"https:\/\/b2b.estesrockets.com\/cdn\/shop\/products\/1256047776012561PT01_medium.jpg?v=1692729860\"\u003e\u003c\/div\u003e\n\u003c\/a\u003e\n\u003cdiv class=\"related-product-name\"\u003e\n\u003ca rel=\"noopener\" title=\"Estes Alpha III Model Rocket Kit\" href=\"https:\/\/www.echosixhobbies.com\/collections\/kits\/products\/alpha-iii-rocket-kit-e2x\" target=\"_blank\"\u003eAlpha III®\u003c\/a\u003e\u003ca class=\"samitaLock-item\" href=\"https:\/\/b2b.estesrockets.com\/products\/alpha-iii\"\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ecom-block ecom-core core__block elmspace ecom-3cytodr3g9l\"\u003e\n\u003cdiv class=\"ecom__element element__heading ecom-element ecom-html ecom-type-deffault\"\u003e\n\u003cdiv\u003e\u003cstrong\u003eOverview\u003c\/strong\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ecom-block ecom-core core__block elmspace ecom-935yj497y5t short-description\"\u003e\n\u003cdiv class=\"ecom-element ecom-product-single ecom-product-single__description\"\u003e\n\u003cdiv class=\"ecom-product-single__description-wrapper\"\u003e\n\u003cdiv class=\"ecom-product-single__description-container\" data-show-type=\"full\"\u003e\n\u003cdiv class=\"ecom-product-single__description--paragraph\"\u003e\n\u003cdiv class=\"ecom-html-des\"\u003e\n\u003cp\u003eThe B6-4 is a widely trusted and well-balanced engine that offers reliable performance across a variety of model rocket kits. With a moderate level of thrust and a 4-second delay, it allows rockets to coast effectively before activating the recovery system, making it ideal for rockets that benefit from a longer delay phase after burnout.\u003c\/p\u003e\n\u003cp\u003eDesigned for single-stage rockets weighing less than 4.0 ounces, the B6-4 engine delivers consistent results and controlled recoveries, making it a great fit for both new flyers refining their skills and seasoned hobbyists looking for dependable flight profiles.\u003c\/p\u003e\n\u003cp\u003eWhether you're launching for fun or using rockets in a STEM learning environment, the B6-4 engine provides an excellent combination of power, altitude, and control. Its predictable performance has made it a go-to for generations of rocketeers.\u003c\/p\u003e\n\u003cp\u003eEach 3-pack includes everything you need for multiple flights: three B6-4 engines, starters, plugs, and recovery wadding. Just pair with your favorite Estes rocket and launch system for a fun and educational experience.\u003c\/p\u003e\n\u003cdiv class=\"ecom-block ecom-core core__block elmspace ecom-e3ua5tbipi hide-on-mobile\"\u003e\n\u003cdiv class=\"ecom__element element__heading ecom-element ecom-html ecom-type-deffault\"\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eTechnical Specifications:\u003c\/strong\u003e\u003cbr\u003eTotal Impulse: 5.00 N-sec\u003cbr\u003eTime Delay: 4 Seconds\u003cbr\u003eMax Lift Weight: 4.0 oz (113 g)\u003cbr\u003eMax Thrust: 12.10 Newtons (2.7 lbs)\u003cbr\u003eThrust Duration: 0.80 Seconds\u003cbr\u003eLength: 2.8 in. (7 cm)\u003cbr\u003eDiameter: 18 mm\u003cbr\u003eWeight: .63 oz. (17.9 g)\u003cbr\u003ePropellant Weight: 0.23 oz (6.5 g)\u003cbr\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eATTENTION: \u003c\/strong\u003e\u003cem\u003eEstes Industries, LLC and Echo Six LLC requires all purchasers and users of Estes® Model Rocket Engines to adhere strictly to all applicable local, state, and federal laws, regulations, and safety standards. The user assumes all responsibility for the safe and lawful use of Estes® products. Estes Industries, LLC and Echo Six LLC expressly disclaims any and all liability for personal injury, property damage, or other loss resulting from the misuse, improper handling, or unauthorized application of its model rocket engines.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Estes Rockets","offers":[{"title":"Default Title","offer_id":51248045293868,"sku":"EST10021","price":12.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/7863\/0444\/files\/010021-B6-4-Engines-Package.png?v=1768013564"},{"product_id":"e9-8-engine-pack","title":"E9-8 Engine Pack","description":"\u003cp\u003e\u003cspan\u003eThe Estes E9-8 is a single stage engine designed for model rockets measuring under 8oz total weight (including rocket and engine). It can also be used as an upper stage engine for rockets using the Large (24 mm) engines.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe engine produces 30 N-s or enough impulse to move 30 kg, 1 m, in 1 sec.\u003cbr\u003eOr it will launch an 8 oz rocket to about 1,000 ft.\u003cbr\u003eThis engine has an 8-second delay before deploying the parachute or streamer.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIn each pack:\n\u003cul\u003e\n\u003cli\u003e3 engines\u003c\/li\u003e\n\u003cli\u003e4 plugs\u003c\/li\u003e\n\u003cli\u003e4 starters\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eTotal Impulse\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e30.00 N-sec\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eTime Delay\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e8 Seconds\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eEstimated Max Lift Weight\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e10.0 oz (283 g)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eMax Thrust\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e25 Newtons (5.6 lbs)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eThrust Duration\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e2.8 Seconds\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eInitial Weight\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e2.24 oz (63.5 g)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003ePropellant Weight\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e1.30 oz (36.9 g)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eQuantity Per Pack\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e3\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Estes Rockets","offers":[{"title":"Default Title","offer_id":51266688516396,"sku":"EMR-001675","price":23.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/7863\/0444\/files\/E9_8_Engines_001675_1.jpg?v=1750554732"},{"product_id":"e12-6-engine-pack","title":"ESTES E12-6 Engine Pack","description":"\u003cp\u003eThe Estes E12-6 is a high-thrust engine with a 6-second delay, designed for heavier rockets up to 14 oz. It offers powerful launches and smooth recovery deployment for larger models.\u003c\/p\u003e\n\u003cp\u003eThis 2-pack includes 2 engines, 2 igniters, and 4 plugs—perfect for experienced rocketeers seeking altitude, reliability, and performance in mid- to large-sized rocket flights.\u003c\/p\u003e\n\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003e- 2 E12-6 Engines\u003c\/dd\u003e\n\u003cdd\u003e- 2 Starters\u003c\/dd\u003e\n\u003cdd\u003e- 4 Starter Plugs\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eLength\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e3.8 in. (9.7 cm)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eDiameter\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e.95 in. (24 mm)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eEstimated Weight\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e2.23 oz. (63.2 g)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eTotal Impulse\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e29.50 N-sec\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eTime Delay\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e6 Seconds\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eEstimated Max Lift Weight\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e14.0 oz (397 g)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eMax Thrust\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e29.60 Newtons (6.7 lbs)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eThrust Duration\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e2.70 Seconds\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eInitial Weight\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e2.23 oz (63.2 g)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003ePropellant Weight\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e1.3 oz (36.9 g)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eQuantity Per Pack\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e3\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv class=\"ecom-block ecom-core core__block elmspace ecom-3cytodr3g9l\" data-core-is=\"block\"\u003e\n\u003cdiv class=\"ecom__element element__heading ecom-element ecom-html\" data-stopdrag=\"true\"\u003e\n\u003cdiv\u003e\u003cstrong\u003eOverview\u003c\/strong\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ecom-block ecom-core core__block elmspace ecom-935yj497y5t short-description\" data-core-is=\"block\"\u003e\n\u003cdiv class=\"ecom-element ecom-product-single ecom-product-single__description\"\u003e\n\u003cdiv class=\"ecom-product-single__description-wrapper\"\u003e\n\u003cdiv class=\"ecom-product-single__description-container\" data-show-type=\"full\"\u003e\n\u003cdiv class=\"ecom-product-single__description--paragraph\"\u003e\n\u003cdiv class=\"ecom-html-des\"\u003e\n\u003cp\u003eThe Estes E12-6 engine is a high-thrust workhorse designed for mid- to large-sized model rockets. With a powerful boost and a 6-second delay, it’s perfect for flights where altitude and performance matter most. This engine is ideal for heavier rockets that need extra force off the launch pad while still ensuring safe and timely recovery system deployment.\u003c\/p\u003e\n\u003cp\u003eCapable of lifting rockets weighing up to 14 ounces, the E12-6 provides reliable, sustained thrust for models that require extended coasting before ejection. The longer delay makes it especially well-suited for rockets with sleek, efficient designs that benefit from more time to climb after burnout. Whether you're flying a Pro Series II rocket or another advanced model, the E12-6 delivers dependable, high-altitude flights.\u003c\/p\u003e\n\u003cp\u003eEach package includes 2 engines, 2 igniters, and 4 reusable starter plugs, giving you everything you need for two full launches. Estes' precision-engineered engines are rigorously tested for quality and performance, giving you peace of mind when it’s time to launch. Just pair it with the right launch pad and controller, and you’re ready for a powerful takeoff.\u003c\/p\u003e\n\u003cp\u003eWhether you're upgrading from D-class motors or optimizing for longer coast times, the E12-6 is the go-to engine for rocketeers ready to push their rockets to greater heights. It's the ideal choice for experienced flyers who want big performance in a versatile, easy-to-use format.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCompatible Rockets:\u003c\/strong\u003e\u003cbr\u003eHi-Flier XL\u003cbr\u003eBig Daddy\u003cbr\u003ePro Series II Vogel\u003cbr\u003eSaturn 1B\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eATTENTION:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003cem\u003eEstes Industries, LLC and Echo Six LLC requires all purchasers and users of Estes® Model Rocket Engines to adhere strictly to all applicable local, state, and federal laws, regulations, and safety standards. The user assumes all responsibility for the safe and lawful use of Estes® products. Estes Industries, LLC and Echo six LLC expressly disclaims any and all liability for personal injury, property damage, or other loss resulting from the misuse, improper handling, or unauthorized application of its model rocket engines.\u003cbr\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eThese engines cannot be sent to post office boxes. Please be sure to provide a PHYSICAL ADDRESS when purchasing E and F sized engines.\u003c\/p\u003e\n\u003cp\u003eE and F sized engines cannot be shipped to Alaska, Hawaii, Puerto Rico or Guam.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cbr\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Estes Rockets","offers":[{"title":"Default Title","offer_id":51266693824812,"sku":"EMR-010030","price":27.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/7863\/0444\/files\/010030-E12-6-Bag.webp?v=1763857516"},{"product_id":"c6-7-engines","title":"Estes Rockets - C6-7 Model Rocket Engines (3pk)","description":"\u003cp\u003eThe Estes C6-7 model rocket engine is a high-performance 18mm motor, perfect for upper-stage flights or lightweight single-stage rockets. With a total impulse of 10.00 Newton-seconds and a powerful 1.6-second burn time, this engine provides strong acceleration to propel rockets to impressive altitudes. Its 7-second delay allows rockets to coast to their highest point before safely deploying the recovery system, making it an excellent choice for high-flying and precision-controlled launches.\u003c\/p\u003e\n\u003cp\u003eEach C6-7 engine pack includes three engines, four starters, and four starter plugs, ensuring multiple thrilling flights. Estes engines are known for their reliability and precision, providing consistent ignition and predictable flight performance. Whether you're launching a single-stage rocket or using the C6-7 as an upper stage, this engine delivers exciting flights and smooth recoveries. Get ready for high-altitude adventures with the Estes C6-7!\u003c\/p\u003e\n\u003cdl\u003e\n\u003cdt\u003eIncludes:\u003c\/dt\u003e\n\u003cdd\u003e- 3 C6-7 Engines\u003c\/dd\u003e\n\u003cdd\u003e- 4 Starters\u003c\/dd\u003e\n\u003cdd\u003e- 4 Starter Plugs\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cp\u003e\u003cstrong\u003ePLEASE NOTE:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eYou must have a physical address for delivery.\u003c\/p\u003e\n\u003cdiv class=\"ecom-block ecom-core core__block elmspace ecom-3cytodr3g9l\" data-core-is=\"block\"\u003e\n\u003cdiv class=\"ecom__element element__heading ecom-element ecom-html\" data-stopdrag=\"true\"\u003e\n\u003cdiv\u003eOverview\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ecom-block ecom-core core__block elmspace ecom-935yj497y5t short-description\" data-core-is=\"block\"\u003e\n\u003cdiv class=\"ecom-element ecom-product-single ecom-product-single__description\"\u003e\n\u003cdiv class=\"ecom-product-single__description-wrapper\"\u003e\n\u003cdiv class=\"ecom-product-single__description-container\" data-show-type=\"full\"\u003e\n\u003cdiv class=\"ecom-product-single__description--paragraph\"\u003e\n\u003cdiv class=\"ecom-html-des\"\u003e\n\u003cp\u003eThe Estes C6-7 model rocket engine is a powerful, high-thrust motor designed for upper-stage flights and lightweight, single-stage rockets. As a standard 18mm engine, the C6-7 provides a strong 1.6-second burn time, delivering consistent acceleration to propel rockets to impressive altitudes. With a 7-second delay before parachute deployment, this engine is ideal for rockets that require an extended coasting phase to reach peak altitude before safely descending.\u003c\/p\u003e\n\u003cp\u003eWith a total impulse of 10.00 Newton-seconds and a maximum thrust of 15.30 Newtons (3.4 lbs), the C6-7 is perfect for rockets weighing up to 2.5 ounces (71 g). The extended delay time ensures that the rocket reaches its full trajectory before the recovery system is deployed, providing a smooth and controlled descent. This engine is best suited for lightweight model rockets designed to take advantage of its extended coast time and high-performance lift capacity.\u003c\/p\u003e\n\u003cp\u003eEach C6-7 engine pack includes three engines, four starters, and four starter plugs, ensuring you have everything needed for multiple launches. Estes engines are engineered for reliability and precision, giving rocketeers the confidence to launch with consistent ignition and predictable flight performance. The parachute ejection charge activates at the perfect moment to ensure a safe and stable landing, allowing for easy rocket retrieval and quick reusability.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eATTENTION:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003cem\u003eEstes Industries, LLC and Echo Six LLC requires all purchasers and users of Estes® Model Rocket Engines to adhere strictly to all applicable local, state, and federal laws, regulations, and safety standards. The user assumes all responsibility for the safe and lawful use of Estes® products. Estes Industries, LLC and Echo Six LLC expressly disclaims any and all liability for personal injury, property damage, or other loss resulting from the misuse, improper handling, or unauthorized application of its model rocket engines.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"ecom-block ecom-core core__block elmspace ecom-e3ua5tbipi hide-on-mobile\" data-core-is=\"block\"\u003e\n\u003cdiv class=\"ecom__element element__heading ecom-element ecom-html\" data-stopdrag=\"true\"\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eTotal Impulse: \u003c\/strong\u003e10.00 N-sec\u003cbr\u003e\u003cstrong\u003eTime Delay: \u003c\/strong\u003e7 Seconds\u003cbr\u003e\u003cstrong\u003eMax Lift Weight:\u003c\/strong\u003e 2.5 oz (71 g)\u003cbr\u003e\u003cstrong\u003eMax Thrust: \u003c\/strong\u003e15.30 Newtons (3.4 lbs)\u003cbr\u003e\u003cstrong\u003eThrust Duration: \u003c\/strong\u003e1.60 Seconds\u003cbr\u003e\u003cstrong\u003eLength: \u003c\/strong\u003e2.8 in. (7 cm)\u003cbr\u003e\u003cstrong\u003eDiameter:\u003c\/strong\u003e 18 mm\u003cbr\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e .85 oz. (24.1 g)\u003cbr\u003e\u003cstrong\u003ePropellant Weight: \u003c\/strong\u003e0.43 oz (12.2 g)\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eCompatible Rockets:\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003e\u003ca href=\"https:\/\/www.echosixhobbies.com\/collections\/launch-sets\/products\/Space-Corps-Centurion-launch-set\" title=\"Link to Space Corps Centurion model rocket launch set\"\u003eSpace Corps Centurion Launch Set\u003c\/a\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003e\u003ca href=\"https:\/\/www.echosixhobbies.com\/collections\/kits\/products\/phantom-blue\" title=\"Link to Phantom Blue Flying Model Rocket Kit\"\u003ePhantom Blue\u003c\/a\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003e\u003ca href=\"https:\/\/www.echosixhobbies.com\/collections\/launch-sets\/products\/tandem-x-launch-set-copy\" title=\"Link to Rascal and Hijinks Model Rocket Launch Set \"\u003eRascal \u0026amp; HiJinks Launch Set\u003c\/a\u003e\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Estes Rockets","offers":[{"title":"Default Title","offer_id":51266701852972,"sku":"EST10038","price":13.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/7863\/0444\/files\/010038-C6-7-Engines-Package.webp?v=1763778750"},{"product_id":"c6-5-engines-1","title":"Estes Rockets - C6-5 Model Rocket Engines (3pk)","description":"\u003cp\u003eThe Estes C6‑5 is a single-stage 18 mm engine designed for rockets under 4 oz. Offering 10 N‑s impulse, 15.3 N thrust, and a 5‑second delay, it delivers stable, mid-power flights. Each pack includes three engines, four igniters, and four plugs.\u003c\/p\u003e\n\u003cp\u003ePerfect for models like Antar™, Big Bertha®, AstroCam®, and Alpha III®, the C6‑5 provides reliable performance for educational, hobbyist, and small‑field launches.\u003c\/p\u003e\n\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003e- 3 C6-5 Engines\u003c\/dd\u003e\n\u003cdd\u003e- 4 Starters\u003c\/dd\u003e\n\u003cdd\u003e- 4 Starter Plugs\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cp\u003e\u003cstrong\u003ePLEASE NOTE:\u003c\/strong\u003e You must have a physical address for delivery.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThe Estes C6‑5 engine is a single-stage, 18 mm standard engine crafted for rockets weighing less than 4 oz (113 g) including the motor. Perfect for mid-sized beginner and intermediate rockets, it offers a powerful yet controlled flight experience. Each pack includes three C6‑5 engines, four igniters, and four starter plugs, making it easy to launch multiple rockets with minimal prep.\u003c\/p\u003e\n\u003cp\u003eThis engine delivers a total impulse of 10 N‑s, a sustained average thrust of 15.3 N (3.4 lb), and a burn duration of approximately 1.6 seconds—ideal for achieving moderate altitude lift-offs. With a 5‑second delay between burnout and ejection, it gives rockets ample time to coast to apogee for smooth recovery system deployment.\u003c\/p\u003e\n\u003cp\u003eMeasuring 2.8″ long and 18 mm in diameter, the C6‑5 fits a wide range of Estes rockets like Antar™, Big Bertha®, AstroCam®, and Alpha III®. Weighing just 0.85 oz (24.1 g) with 0.43 oz (12.2 g) of propellant, this engine balances power and precision, delivering consistent flight trajectories every time.\u003c\/p\u003e\n\u003cp\u003eBacked by Estes’ legacy of quality and reliability, the C6‑5 is a go-to for educational programs, hobbyist launches, and model rocket enthusiasts seeking dependable mid-power performance. It ensures repeatable, safe, and exciting flights for a wide spectrum of flying environments.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eATTENTION:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003cem\u003eEstes Industries, LLC and Echo Six LLC requires all purchasers and users of Estes® Model Rocket Engines to adhere strictly to all applicable local, state, and federal laws, regulations, and safety standards. The user assumes all responsibility for the safe and lawful use of Estes® products. Estes Industries, LLC and Echo Six LLC expressly disclaims any and all liability for personal injury, property damage, or other loss resulting from the misuse, improper handling, or unauthorized application of its model rocket engines.\u003c\/em\u003e\u003c\/p\u003e","brand":"Estes Rockets","offers":[{"title":"Default Title","offer_id":51269128847660,"sku":"EST10024","price":14.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/7863\/0444\/files\/010024-C6-5-Bag.webp?v=1750614426"},{"product_id":"estes-regular-engine-mount-kit","title":"Estes Rockets - Regular Engine Mount Kit","description":"\u003cp\u003eThe Estes Regular Engine Mount Kit gives you everything you need to securely install engines in your model rockets. Designed for compatibility with BT-50, BT-55, BT-56, and BT-60 body tubes, this kit offers versatility for a wide range of builds. The included BT-20 (0.74 in. \/ 19 mm) engine mount tubes make assembly simple and reliable, ensuring smooth performance at launch.\u003c\/p\u003e\n\u003cp\u003eWhether you’re working on a new design or replacing a worn mount, this kit provides a straightforward solution with complete instructions included. You can even use it to make a conversion mount for lightweight D-powered rockets, adding extra flexibility to your fleet. Durable and easy to assemble, this kit is a must-have accessory for any rocketeer looking for consistent results.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Compatibility:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eFits BT-50, BT-55, BT-56, and BT-60 body tubes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecure Engine Mounting:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eIncludes BT-20 (0.74 in. \/ 19 mm) engine mount tubes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible Use:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eCan be used to create conversion mounts for lightweight D-powered rockets\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete Instructions:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eStep-by-step guidance makes assembly simple and reliable\u003cbr\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"ecom-block ecom-core core__block elmspace ecom-7erumj97zn9\" data-core-is=\"block\"\u003e\n\u003cdiv class=\"ecom__element element__heading ecom-element ecom-html\" data-stopdrag=\"true\"\u003e\n\u003ch2 class=\"ecom__heading ecom-db\"\u003eOverview\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ecom-block ecom-core core__block ecom-kko8320bty9 short-description\" data-core-is=\"block\"\u003e\n\u003cdiv class=\"ecom-element ecom-product-single ecom-product-single__metafield\"\u003e\n\u003cdiv class=\"ecom-product-single__metafield-wrapper\"\u003e\n\u003cdiv class=\"ecom-product-single__metafield-container\"\u003e\n\u003cp\u003eThe Estes Regular Engine Mount Kit is designed to provide rocketeers with a dependable and versatile solution for engine mounting. This kit works seamlessly with BT-50, BT-55, BT-56, and BT-60 body tubes, making it a go-to accessory for both new builds and repairs. Each kit comes with BT-20 (0.74 in. \/ 19 mm) engine mount tubes that ensure secure installation and optimal engine alignment.\u003c\/p\u003e\n\u003ch3\u003eVersatile and Practical\u003c\/h3\u003e\n\u003cp\u003eOne of the standout features of this kit is its ability to serve multiple purposes. Beyond traditional engine mounting, it can be used to create a conversion mount for lightweight D-powered rockets, expanding your build possibilities. Whether you’re experimenting with new designs or updating older models, this kit adapts to your needs.\u003c\/p\u003e\n\u003ch3\u003eEasy Assembly with Instructions\u003c\/h3\u003e\n\u003cp\u003eDesigned with hobbyists in mind, the kit includes complete, step-by-step instructions. Even newer rocketeers can follow along and achieve a secure, professional-quality engine mount. Clear directions make the process fast and hassle-free, so you can spend less time assembling and more time launching.\u003c\/p\u003e\n\u003ch3\u003eReliable Performance Every Launch\u003c\/h3\u003e\n\u003cp\u003eDurability and precision are at the core of this engine mount kit. Each component is engineered to withstand the stresses of repeated flights, ensuring consistent performance from liftoff to recovery. With this kit in your workshop, you’ll always have a reliable solution for your next project.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Estes Rockets","offers":[{"title":"Default Title","offer_id":52364003770668,"sku":"EST3158","price":7.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/7863\/0444\/files\/3158_engine_mount_kit_product.webp?v=1763864829"},{"product_id":"estes-d-and-e-engine-mount-kit","title":"Estes Rockets - D \u0026 E Engine Mount Kit","description":"\u003cdiv class=\"product__description rte quick-add-hidden\"\u003e\n\u003cul\u003e\n\u003cli\u003eHeavy duty engine mounts for the D and E engines\u003cbr\u003eContains enough parts to mount two engines\u003cbr\u003eIncludes 19 individual parts\u003cbr\u003eThis accessory pack contains all the component parts for mounting one or two 24 mm D and E engines in BT-55, 60 and 80 body tubes. Included are:\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003e30052\u003c\/strong\u003e - Large Diameter Laser Cut Centering Ring (qty. 1)\u003cbr\u003eThis BT-80 body tube centering ring set is laser cut from heavy duty cardstock and allows the model rocket builder the option to insert a single 4 in., BT-50 motor tube into a much larger diameter body tube.\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003e30132 \u003c\/strong\u003e- Small Diameter Laser Cut Centering Ring (qty. 1)\u003cbr\u003eThis BT-60 body tube centering ring set is laser cut from heavy duty cardstock and allows the model rocket designer and option to insert a 4 in., BT-50 engine mounting tube in a BT-60 diameter main rocket body tube.\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003e30166-2\u003c\/strong\u003e - AR-5055 Green Adapter Ring (qty. 4)\u003cbr\u003eTwo spiral wound green rings are glued at marked locations on the 4 in., 24 mm engine mount tube and allow for proper centering of a single 24 mm, C11, D12 or E12 Estes model rocket engine in a BT-55 size body tube.\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003e30164-2\u003c\/strong\u003e - AR-2050 Green Engine Block (qty. 3)\u003cbr\u003eThis spiral wound green paper motor tube engine block is glued into one end of the 4 in., 24 mm engine mount tube. However please note on the detailed instructions included with this accessory pack, the distance from the end of the 4 in. engine motor tube that the engine block is glued is dependent on if the designer is going to use a 24 mm C11 or D12 engine or if 24 mm E12 engine are planned for. In either case, installation of the engine block creates a positive stop when glued in front of the engine hook, which keeps the engine from pushing up through the main rocket body at ignition and during the thrust phase of launch.\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003e30368\u003c\/strong\u003e - BT-50 Engine Mounting Tube (qty. 3)\u003cbr\u003eThese BT-50 Engine Mounting Tubes are the key component to providing the necessary thrust to lift a single egg to 800 ft. in a TARC competitive model rocket. Each tube is cut to 4 in. in length and when assembled with an engine block, engine hook, engine hook retainer and the appropriate centering ring size, TARC teams can explore the potential lifting limits of their rocket design.\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003e30480\u003c\/strong\u003e - Black Engine Hook Retainer (qty. 2)\u003cbr\u003eThis special, spiral wound black paper tube is glued to the outside of the BT-50 engine mounting tube to securely hold the pre-bent, metal E engine hook in place.\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003e35005\u003c\/strong\u003e - Spacer E to D (qty. 1)\u003cbr\u003eThis orange colored spiral wound paper spacer is used when converting from a more powerful 24 mm, 3 ¾ in. length E12 series engine to a less powerful and shorter 24 mm, 2 3\/4 in. length C11 or D12 engine.\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003e35021\u003c\/strong\u003e- D Engine Hook (qty. 1)\u003cbr\u003eThis engine hook is bent from a mild, but durable steel and is used with an engine hook retainer to hold 24 mm C11 and D12 size engines in a BT-50 spiral wound motor tube for the ignition and ejection phases of launch. The hook is not recommended nor will it work with our 24 mm, 3 3\/4 in. long E12 size engines.\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003e35022\u003c\/strong\u003e- E Engine Hook (qty. 1)\u003cbr\u003ePre-bent from a mild, but durable steel, this engine hook and is used with an engine hook retainer to hold 24 mm E12 size engines in a BT-50 spiral wound motor tube at ignition and during the thrust phase of launch. This hook will also work with our 24 mm C11 and D12 engines by placing an orange colored D to E spacer in the engine mounting tube before inserting a shorter length Estes C11 or D12 engine.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Estes Rockets","offers":[{"title":"Default Title","offer_id":52364004294956,"sku":"EMR-003159","price":11.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/7863\/0444\/files\/3159_product_0292700e-8e09-4773-86a9-5c2ef37792fa.webp?v=1763865113"},{"product_id":"estes-bt-80-29mm-engine-mount-kit","title":"ESTES BT-80 29mm Engine Mount Kit","description":"\u003cdiv\u003e\n\u003cspan\u003eThick walled, white colored engine mount tube. Used for all 29 mm diameter motors. Dimensions for ID is  1.140 inches and OD is 1.210 inches. Package includes 3 laser cut BT 80 centering rings, 1 Engine mount tube, and 1 29mm engine retainer.\u003c\/span\u003e\u003cspan data-ccp-props='{\"201341983\":0,\"335551550\":1,\"335551620\":1,\"335559739\":160,\"335559740\":259}'\u003e \u003c\/span\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003e• Used for 29 mm model rocket engines\u003c\/p\u003e\n\u003cp\u003e• 8 inches (20.32 cm) in length\u003c\/p\u003e","brand":"Estes Rockets","offers":[{"title":"Default Title","offer_id":52365633683756,"sku":"EMR-009743","price":10.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/7863\/0444\/files\/3159_product.webp?v=1749749575"},{"product_id":"estes-f15-4-engines-29-mm","title":"Estes Rockets - F15-4 Engines (29 mm) (2pk)","description":"\u003cp\u003eThe Estes F15-4 engine delivers high-thrust power and long burn times, making it a reliable choice for mid-power rockets. With a 4-second delay, it’s optimized for heavier, single-stage rockets needing a smooth boost-to-deploy transition.\u003c\/p\u003e\n\u003cp\u003eBuilt for performance, the F15-4’s extended 3.45-second thrust duration provides impressive altitude gains, while the 29 mm casing ensures compatibility with a wide range of larger rockets. It’s an ideal choice for modelers ready to step up from D and E engines.\u003c\/p\u003e\n\u003cdl\u003e\n\u003cdt\u003eIncludes:\u003c\/dt\u003e\n\u003cdd\u003e- 2 F15-4 Engines\u003c\/dd\u003e\n\u003cdd\u003e- 2 Starters\u003c\/dd\u003e\n\u003cdd\u003e- 4 Starter Plugs\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cdiv data-core-is=\"block\" class=\"ecom-block ecom-core core__block elmspace ecom-iag81uutdh\"\u003e\n\u003cdiv data-stopdrag=\"true\" class=\"ecom__element element__heading ecom-element ecom-html\"\u003e\n\u003ch2 class=\"ecom__heading ecom-db\"\u003eOverview\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv data-core-is=\"block\" class=\"ecom-block ecom-core core__block elmspace ecom-bpdbfpj6h6 short-description\"\u003e\n\u003cdiv class=\"ecom-element ecom-product-single ecom-product-single__description\"\u003e\n\u003cdiv class=\"ecom-product-single__description-wrapper\"\u003e\n\u003cdiv data-show-type=\"full\" class=\"ecom-product-single__description-container\"\u003e\n\u003cdiv class=\"ecom-product-single__description--paragraph\"\u003e\n\u003cdiv class=\"ecom-html-des\"\u003e\n\u003cp\u003eTake your flights to the next level with the Estes F15-4 engine—a powerful mid-power engine designed for model rocket enthusiasts seeking longer thrust duration and higher lift capabilities. With 49.61 N-sec of total impulse and a max thrust of 25.26 Newtons, this engine is built to launch heavier rockets to stunning altitudes with confidence and control.\u003c\/p\u003e\n\u003cp\u003eThe F15-4 offers more than just raw power—it’s engineered for dependable, sustained flight. The 4-second delay provides a balanced coast period after burnout, ideal for deploying parachutes or other recovery systems at peak altitude. Its long 3.45-second thrust duration gives your rocket a smooth, graceful ascent, minimizing stress on airframes while maximizing trajectory efficiency.\u003c\/p\u003e\n\u003cp\u003eThis engine is a popular choice for larger rockets in the Estes Pro Series II line and other compatible 29 mm models. Its consistent performance makes it an excellent pick for hobbyists looking to upgrade from E-class engines while staying within the ease of single-use, black powder propulsion. Whether you're launching for sport, altitude records, or payload testing, the F15-4 delivers dependable performance every time.\u003c\/p\u003e\n\u003cp\u003eWith its powerful thrust profile, long burn, and mid-delay deployment, the Estes F15-4 is perfect for high-performance rockets weighing up to 21 ounces. Expand your launch capabilities and experience the next level of model rocketry excitement with this hard-working engine.\u003c\/p\u003e\n\u003cp\u003eCompatible Rockets\u003cbr\u003ePro Series II Doorknob\u003cbr\u003ePro Series II Der Big Red Max\u003cbr\u003ePro Series II Nike Smoke\u003cbr\u003ePro Series II Optima\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv data-core-is=\"block\" class=\"ecom-block ecom-core core__block elmspace ecom-jarn3n4g13 hide-on-mobile\"\u003e\n\u003cdiv data-stopdrag=\"true\" class=\"ecom__element element__heading ecom-element ecom-html\"\u003e\n\u003cp class=\"ecom__heading ecom-db\"\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eTotal Impulse\u003c\/strong\u003e\u003cbr\u003e49.61 N-sec\u003cbr\u003e\u003cstrong\u003eTime Delay\u003c\/strong\u003e\u003cbr\u003e4 Seconds\u003cbr\u003e\u003cstrong\u003eMax Lift Weight\u003c\/strong\u003e\u003cbr\u003e21.0 oz (595 g)\u003cbr\u003e\u003cstrong\u003eMax Thrust\u003c\/strong\u003e\u003cbr\u003e25.26 Newtons (5.7 lbs)\u003cbr\u003e\u003cstrong\u003eThrust Duration\u003c\/strong\u003e\u003cbr\u003e3.45 Seconds\u003cbr\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003cbr\u003e4.5 in. (11.4 cm)\u003cbr\u003e\u003cstrong\u003eDiameter\u003c\/strong\u003e\u003cbr\u003e29 mm\u003cbr\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003cbr\u003e3.59 oz. (101.8 g)\u003cbr\u003e\u003cstrong\u003ePropellant Weight\u003c\/strong\u003e\u003cbr\u003e2.12 oz (60.0 g)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eATTENTION:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003cem\u003eEstes Industries, LLC and Echo Six LLC requires all purchasers and users of Estes® Model Rocket Engines to adhere strictly to all applicable local, state, and federal laws, regulations, and safety standards. The user assumes all responsibility for the safe and lawful use of Estes® products. Estes Industries, LLC and Echo Six LLC expressly disclaims any and all liability for personal injury, property damage, or other loss resulting from the misuse, improper handling, or unauthorized application of its model rocket engines.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003eThese engines cannot be sent to post office boxes. Please be sure to provide a PHYSICAL ADDRESS when purchasing E and F sized engines.\u003c\/p\u003e\n\u003cp\u003eE and F sized engines cannot be shipped to Alaska, Hawaii, Puerto Rico or Guam.\u003c\/p\u003e","brand":"Estes Rockets","offers":[{"title":"Default Title","offer_id":52365634896172,"sku":"EST10031","price":32.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/7863\/0444\/files\/F15-4-Engines-Package.webp?v=1763949596"},{"product_id":"estes-f16-6-engines-29-mm","title":"Estes Rockets - E16-6 Engines (29 mm) (2pk)","description":"\u003cp\u003eThe E16-6 Engine (29 mm) by Estes Rockets is a powerful and versatile engine designed for single-stage and upper-stage flights. With a total impulse of 33.68 N-sec and a 6-second delay, it’s perfect for mid to high-power rockets requiring precise parachute deployment and reliable performance. Capable of lifting rockets up to 16 ounces (453 grams) to impressive altitudes, this engine is ideal for advanced hobbyists looking to achieve smooth, high-energy launches. Each pack includes two engines, two starters, and four starter plugs, making it easy to prepare for multiple exciting flights.\u003c\/p\u003e\n\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003e- 2 E16-6 Engines\u003c\/dd\u003e\n\u003cdd\u003e- 2 Starters\u003c\/dd\u003e\n\u003cdd\u003e- 4 Starter Plugs\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cdiv data-core-is=\"block\" class=\"ecom-block ecom-core core__block elmspace ecom-iag81uutdh\"\u003e\n\u003cdiv data-stopdrag=\"true\" class=\"ecom__element element__heading ecom-element ecom-html\"\u003e\n\u003ch2 class=\"ecom__heading ecom-db\"\u003eOverview\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv data-core-is=\"block\" class=\"ecom-block ecom-core core__block elmspace ecom-bpdbfpj6h6 short-description\"\u003e\n\u003cdiv class=\"ecom-element ecom-product-single ecom-product-single__description\"\u003e\n\u003cdiv class=\"ecom-product-single__description-wrapper\"\u003e\n\u003cdiv data-show-type=\"full\" class=\"ecom-product-single__description-container\"\u003e\n\u003cdiv class=\"ecom-product-single__description--paragraph\"\u003e\n\u003cdiv class=\"ecom-html-des\"\u003e\n\u003cp\u003eThe E16-6 Engine (29 mm) is a high-performance model rocket engine designed for single-stage rockets or as the upper stage in multi-stage configurations. With a total impulse of 33.68 N-sec and a 6-second delay, this engine is perfect for larger rockets needing a powerful and reliable boost. Ideal for advanced rocketeers, the E16-6 engine ensures smooth flights and precise parachute deployment for a safe and exciting recovery.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eEach package includes two engines, two starters, and four starter plugs, giving you everything needed for two launches. With the ability to lift rockets weighing up to 16 ounces (453 grams) to impressive altitudes, the E16-6 delivers reliable performance and exhilarating results. Whether you're flying rockets like the Pro Series II™ Majestic™ or experimenting with custom designs, this engine offers the thrust you need to elevate your rocketry experience.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eWith its reliable thrust and high-altitude capability, the E16-6 Engine is an essential addition for advanced rocketry enthusiasts. Ready to power your next launch?\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCompatible Rockets:\u003c\/strong\u003e\u003cbr\u003ePro Series II Star Orbiter\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv data-core-is=\"block\" class=\"ecom-block ecom-core core__block elmspace ecom-jarn3n4g13 hide-on-mobile\"\u003e\n\u003cdiv data-stopdrag=\"true\" class=\"ecom__element element__heading ecom-element ecom-html\"\u003e\n\u003cp class=\"ecom__heading ecom-db\"\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eTotal Impulse\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003e33.68 N-sec\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003eTime Delay\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003e6 Seconds\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003eMax Lift Weight\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003e16.0 oz (453 g)\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003eMax Thrust\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003e26.44 Newtons (5.9 lbs)\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003eThrust Duration\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003e2.09 Seconds\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003cbr\u003e4.5 in. (11.4 cm)\u003cbr\u003e\u003cstrong\u003eDiameter\u003c\/strong\u003e\u003cbr\u003e29 mm\u003cbr\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003e2.92 oz. (82.8 g)\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003ePropellant Weight\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003e1.41 oz (40.0 g)\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eATTENTION:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003cem\u003eEstes Industries, LLC and Echo Six LLC requires all purchasers and users of Estes® Model Rocket Engines to adhere strictly to all applicable local, state, and federal laws, regulations, and safety standards. The user assumes all responsibility for the safe and lawful use of Estes® products. Estes Industries, LLC and Echo Six LLC expressly disclaims any and all liability for personal injury, property damage, or other loss resulting from the misuse, improper handling, or unauthorized application of its model rocket engines.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eNote: HAZMAT Shipping Restrictions Apply\u003c\/b\u003e\u003cbr\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003eThese engines cannot be sent to post office boxes. Please be sure to provide a PHYSICAL ADDRESS when purchasing E and F sized engines.\u003c\/p\u003e\n\u003cp\u003eE and F sized engines cannot be shipped to Alaska, Hawaii, Puerto Rico or Guam.\u003c\/p\u003e","brand":"Estes Rockets","offers":[{"title":"Default Title","offer_id":52365638009132,"sku":"EST10034","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/7863\/0444\/files\/010034-E16-6-Bag_560bd6b9-4a15-4fac-b475-5dce4f474be1.webp?v=1763950161"},{"product_id":"estes-f15-8-engines-29-mm","title":"Estes Rockets - F15-8 Engines (29 mm)","description":"\u003cp\u003eThe Estes F15-8 engine is a high-thrust, long-burn motor ideal for advanced model rocket flights. Designed for 29 mm single-stage rockets, it delivers over 3 seconds of sustained thrust with an 8-second delay for high-altitude coasting and recovery.\u003c\/p\u003e\n\u003cp\u003ePerfect for retailers and resellers looking to meet demand for mid-power performance, the F15-8 offers a reliable, crowd-pleasing launch experience for hobbyists seeking altitude, duration, and impact in every flight.\u003c\/p\u003e\n\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003e- 2 F15-8 Engines\u003c\/dd\u003e\n\u003cdd\u003e- 2 Starters\u003c\/dd\u003e\n\u003cdd\u003e- 4 Starter Plugs\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cdiv class=\"ecom-block ecom-core core__block elmspace ecom-iag81uutdh\" data-core-is=\"block\"\u003e\n\u003cdiv class=\"ecom__element element__heading ecom-element ecom-html\" data-stopdrag=\"true\"\u003e\n\u003cdiv data-core-is=\"block\" class=\"ecom-block ecom-core core__block elmspace ecom-3cytodr3g9l\"\u003e\n\u003cdiv data-stopdrag=\"true\" class=\"ecom__element element__heading ecom-element ecom-html\"\u003e\n\u003cdiv\u003e\u003cstrong\u003eOverview\u003c\/strong\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv data-core-is=\"block\" class=\"ecom-block ecom-core core__block elmspace ecom-935yj497y5t short-description\"\u003e\n\u003cdiv class=\"ecom-element ecom-product-single ecom-product-single__description\"\u003e\n\u003cdiv class=\"ecom-product-single__description-wrapper\"\u003e\n\u003cdiv data-show-type=\"full\" class=\"ecom-product-single__description-container\"\u003e\n\u003cdiv class=\"ecom-product-single__description--paragraph\"\u003e\n\u003cdiv class=\"ecom-html-des\"\u003e\n\u003cp\u003eStock up on performance with the Estes F15-8 engine—a top-tier choice for customers seeking long-duration thrust and precise recovery timing in their mid-power rockets. This 29 mm engine delivers 49.61 N-sec of total impulse and over 3 seconds of continuous thrust, making it an ideal fit for single-stage rockets that prioritize high, stable flights.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe 8-second delay gives hobbyists the ability to optimize coast time before parachute deployment, resulting in more controlled recoveries and higher altitude achievements. Whether used for advanced sport rockets or custom builds, the F15-8 helps elevate the rocketry experience and adds value to any engine assortment on your shelves.\u003c\/p\u003e\n\u003cp\u003eIts durable composite propellant and consistent ignition performance make it a reliable option for customers seeking serious thrust without jumping to full high-power engines. The F15-8 fills a key niche between E and G-class engines, appealing to experienced flyers looking for more altitude and extended burn time from a 29 mm motor.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eBy offering the Estes F15-8 in your lineup, you're giving your customers access to one of the most versatile and exciting options in the mid-power range—backed by the quality and trust Estes is known for in the model rocketry world.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ecom-block ecom-core core__block elmspace ecom-bpdbfpj6h6 short-description\" data-core-is=\"block\"\u003e\n\u003cdiv class=\"ecom-element ecom-product-single ecom-product-single__description\"\u003e\n\u003cdiv class=\"ecom-product-single__description-wrapper\"\u003e\n\u003cdiv class=\"ecom-product-single__description-container\" data-show-type=\"full\"\u003e\n\u003cdiv class=\"ecom-product-single__description--paragraph\"\u003e\n\u003cdiv class=\"ecom-html-des\"\u003e\n\u003cp\u003e\u003cstrong\u003eCompatible Rockets:\u003c\/strong\u003e\u003cbr\u003eSo Long\u003cbr\u003ePro Series II Star Orbiter\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv class=\"ecom-block ecom-core core__block elmspace ecom-jarn3n4g13 hide-on-mobile\" data-core-is=\"block\"\u003e\n\u003cdiv class=\"ecom__element element__heading ecom-element ecom-html\" data-stopdrag=\"true\"\u003e\n\u003cp class=\"ecom__heading ecom-db\"\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eTotal Impulse\u003c\/strong\u003e\u003cbr\u003e49.61 N-sec\u003cbr\u003e\u003cstrong\u003eTime Delay\u003c\/strong\u003e\u003cbr\u003e8 Seconds\u003cbr\u003e\u003cstrong\u003eMax Lift Weight\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003e15.0 oz (425 g)\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003eMax Thrust\u003c\/strong\u003e\u003cbr\u003e25.26 Newtons (5.7 lbs)\u003cbr\u003e\u003cstrong\u003eThrust Duration\u003c\/strong\u003e\u003cbr\u003e3.45 Seconds\u003cbr\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003cbr\u003e4.5 in. (11.4 cm)\u003cbr\u003e\u003cstrong\u003eDiameter\u003c\/strong\u003e\u003cbr\u003e29 mm\u003cbr\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003e3.69 oz. (104.6 g)\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003ePropellant Weight\u003c\/strong\u003e\u003cbr\u003e2.12 oz (60.0 g)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eATTENTION:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003cem\u003eEstes Industries, LLC and Echo Six LLC requires all purchasers and users of Estes® Model Rocket Engines to adhere strictly to all applicable local, state, and federal laws, regulations, and safety standards. The user assumes all responsibility for the safe and lawful use of Estes® products. Estes Industries, LLC and Echo Six LLC expressly disclaims any and all liability for personal injury, property damage, or other loss resulting from the misuse, improper handling, or unauthorized application of its model rocket engines.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cb\u003eNote: HAZMAT Shipping Restrictions Apply\u003c\/b\u003e\u003cbr\u003eThese engines cannot be sent to post office boxes. Please be sure to provide a PHYSICAL ADDRESS when purchasing E and F sized engines.\u003c\/p\u003e\n\u003cp\u003eE and F sized engines cannot be shipped to Alaska, Hawaii, Puerto Rico or Guam.\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Estes Rockets","offers":[{"title":"Default Title","offer_id":52365661176108,"sku":"EST10042","price":32.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/7863\/0444\/files\/010042-F15-8-Model-Rocket-Engines.webp?v=1763950745"},{"product_id":"estes-f15-8-engines-29-mm-copy","title":"Estes Rockets - F15-0 Engines (29 mm)","description":"\u003cp\u003eThe Estes F15-0 is a powerful 29 mm booster engine built for multi-stage flight applications. With no delay and a long thrust duration, it’s engineered to deliver strong, consistent liftoff in the first stage of complex model rocket flights.\u003c\/p\u003e\n\u003cp\u003eStocking this engine gives your customers a reliable, high-thrust option for boosting large rockets and achieving clean staging to upper engines. Ideal for hobby shops, clubs, and experienced flyers, the F15-0 rounds out your inventory with a trusted Estes performance motor.\u003c\/p\u003e\n\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003e- 2 F15-0 Engines\u003c\/dd\u003e\n\u003cdd\u003e- 2 Starters\u003c\/dd\u003e\n\u003cdd\u003e- 4 Starter Plugs\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cdiv data-core-is=\"block\" class=\"ecom-block ecom-core core__block elmspace ecom-iag81uutdh\"\u003e\n\u003cdiv data-stopdrag=\"true\" class=\"ecom__element element__heading ecom-element ecom-html\"\u003e\n\u003cdiv class=\"ecom-block ecom-core core__block elmspace ecom-3cytodr3g9l\" data-core-is=\"block\"\u003e\n\u003cdiv class=\"ecom__element element__heading ecom-element ecom-html\" data-stopdrag=\"true\"\u003e\n\u003cdiv class=\"ecom-block ecom-core core__block elmspace ecom-3cytodr3g9l\" data-core-is=\"block\"\u003e\n\u003cdiv class=\"ecom__element element__heading ecom-element ecom-html\" data-stopdrag=\"true\"\u003e\n\u003cdiv\u003e\u003cstrong\u003eOverview\u003c\/strong\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ecom-block ecom-core core__block elmspace ecom-935yj497y5t short-description\" data-core-is=\"block\"\u003e\n\u003cdiv class=\"ecom-element ecom-product-single ecom-product-single__description\"\u003e\n\u003cdiv class=\"ecom-product-single__description-wrapper\"\u003e\n\u003cdiv class=\"ecom-product-single__description-container\" data-show-type=\"full\"\u003e\n\u003cdiv class=\"ecom-product-single__description--paragraph\"\u003e\n\u003cdiv class=\"ecom-html-des\"\u003e\n\u003cp\u003eThe Estes F15-0 engine is a high-performance booster-stage motor designed for multi-stage model rockets. With a 29 mm diameter and a thrust duration of 3.45 seconds, this engine delivers a strong, sustained lift to propel heavier rockets through the first stage of flight. It features no time delay and no ejection charge, making it ideal for staged configurations where reliable ignition of the upper stage is critical.\u003c\/p\u003e\n\u003cp\u003eThis engine is especially valuable for retailers serving experienced hobbyists and clubs who fly larger, more complex rockets. Its high total impulse and max thrust rating of 25.26 Newtons support impressive altitude gains while maintaining launch stability. The F15-0 pairs well with upper stage engines like the F15-6 or F15-8, offering smooth performance and dependable results with every flight.\u003c\/p\u003e\n\u003cp\u003ePerfect for stocking alongside Pro Series II kits and accessories, the F15-0 engine helps expand your product offering for advanced flyers. With its 29 mm form factor and strong booster capabilities, it appeals to customers seeking staged flight configurations or those building custom multi-stage rockets.\u003c\/p\u003e\n\u003cp\u003eEach package includes 2 F15-0 engines, 2 starters, and 4 starter plugs—making it easy to merchandise and sell in stores or online. Whether you're outfitting club programs, specialty hobby shops, or event-driven sales, this engine delivers dependable quality that serious modelers trust.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv data-core-is=\"block\" class=\"ecom-block ecom-core core__block elmspace ecom-bpdbfpj6h6 short-description\"\u003e\n\u003cdiv class=\"ecom-element ecom-product-single ecom-product-single__description\"\u003e\n\u003cdiv class=\"ecom-product-single__description-wrapper\"\u003e\n\u003cdiv data-show-type=\"full\" class=\"ecom-product-single__description-container\"\u003e\n\u003cdiv class=\"ecom-product-single__description--paragraph\"\u003e\n\u003cdiv class=\"ecom-html-des\"\u003e\n\u003cp\u003e\u003cstrong\u003eCompatible Rockets:\u003c\/strong\u003e\u003cbr\u003eSo Long\u003cbr\u003ePro Series II Vogel\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv data-core-is=\"block\" class=\"ecom-block ecom-core core__block elmspace ecom-jarn3n4g13 hide-on-mobile\"\u003e\n\u003cdiv data-stopdrag=\"true\" class=\"ecom__element element__heading ecom-element ecom-html\"\u003e\n\u003cp class=\"ecom__heading ecom-db\"\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eTotal Impulse\u003c\/strong\u003e\u003cbr\u003e49.61 N-sec\u003cbr\u003e\u003cstrong\u003eTime Delay\u003c\/strong\u003e\u003cbr\u003eNone\u003cbr\u003e\u003cstrong\u003eMax Lift Weight\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003e190 oz (539 g)\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003eMax Thrust\u003c\/strong\u003e\u003cbr\u003e25.26 Newtons (5.7 lbs)\u003cbr\u003e\u003cstrong\u003eThrust Duration\u003c\/strong\u003e\u003cbr\u003e3.45 Seconds\u003cbr\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003cbr\u003e4.5 in. (11.4 cm)\u003cbr\u003e\u003cstrong\u003eDiameter\u003c\/strong\u003e\u003cbr\u003e29 mm\u003cbr\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003e3.32 oz. (94.1 g)\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003ePropellant Weight\u003c\/strong\u003e\u003cbr\u003e2.12 oz (60.0 g)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eATTENTION:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003cem\u003eEstes Industries, LLC and Echo Six LLC requires all purchasers and users of Estes® Model Rocket Engines to adhere strictly to all applicable local, state, and federal laws, regulations, and safety standards. The user assumes all responsibility for the safe and lawful use of Estes® products. Estes Industries, LLC and Echo Six LLC expressly disclaims any and all liability for personal injury, property damage, or other loss resulting from the misuse, improper handling, or unauthorized application of its model rocket engines.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003eThese engines cannot be sent to post office boxes. Please be sure to provide a PHYSICAL ADDRESS when purchasing E and F sized engines.\u003c\/p\u003e\n\u003cp\u003eE and F sized engines cannot be shipped to Alaska, Hawaii, Puerto Rico or Guam.\u003cbr\u003e\u003cb\u003eHAZMAT Shipping Restrictions Apply.\u003c\/b\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Estes Rockets","offers":[{"title":"Default Title","offer_id":52381012590892,"sku":"EST10051","price":32.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/7863\/0444\/files\/010051-F15-0-Model-Rocket-Engines-2-Pack.webp?v=1764369278"},{"product_id":"estes-f16-0-engines-29-mm","title":"ESTES F16-0 Engines (29 mm)","description":"\u003cp\u003eThe E16-0 Engines (29 mm) by Estes Rockets are high-powered booster-stage engines designed to deliver exceptional thrust for multi-stage rockets. With a burn time of 2.09 seconds and a total impulse of 33.68 N-sec, these engines provide the initial boost needed to propel larger rockets like the Pro Series II™ So Long to incredible heights. Ideal for advanced rocketeers, the E16-0 engines ensure reliable and consistent performance, making them a perfect choice for ambitious launches and multi-stage experiments. Each pack includes two engines, starters, and plugs to power your next rocketry adventure.\u003c\/p\u003e\n\u003cdl\u003e\n\u003cdt\u003eIncludes:\u003c\/dt\u003e\n\u003cdd\u003e- 2 E16-0 Engines\u003c\/dd\u003e\n\u003cdd\u003e- 2 Starters\u003c\/dd\u003e\n\u003cdd\u003e- 4 Starter Plugs\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cdiv data-core-is=\"block\" class=\"ecom-block ecom-core core__block elmspace ecom-iag81uutdh\"\u003e\n\u003cdiv data-stopdrag=\"true\" class=\"ecom__element element__heading ecom-element ecom-html\"\u003e\n\u003cdiv class=\"ecom-block ecom-core core__block elmspace ecom-3cytodr3g9l\" data-core-is=\"block\"\u003e\n\u003cdiv class=\"ecom__element element__heading ecom-element ecom-html\" data-stopdrag=\"true\"\u003e\n\u003cdiv class=\"ecom-block ecom-core core__block elmspace ecom-3cytodr3g9l\" data-core-is=\"block\"\u003e\n\u003cdiv class=\"ecom__element element__heading ecom-element ecom-html\" data-stopdrag=\"true\"\u003e\n\u003cdiv class=\"ecom-block ecom-core core__block elmspace ecom-3cytodr3g9l\" data-core-is=\"block\"\u003e\n\u003cdiv class=\"ecom__element element__heading ecom-element ecom-html\" data-stopdrag=\"true\"\u003e\n\u003cdiv\u003e\u003cstrong\u003eOverview\u003c\/strong\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ecom-block ecom-core core__block elmspace ecom-935yj497y5t short-description\" data-core-is=\"block\"\u003e\n\u003cdiv class=\"ecom-element ecom-product-single ecom-product-single__description\"\u003e\n\u003cdiv class=\"ecom-product-single__description-wrapper\"\u003e\n\u003cdiv class=\"ecom-product-single__description-container\" data-show-type=\"full\"\u003e\n\u003cdiv class=\"ecom-product-single__description--paragraph\"\u003e\n\u003cdiv class=\"ecom-html-des\"\u003e\n\u003cp\u003eThe E16-0 Engines (29 mm) by Estes Rockets are the perfect solution for rocketeers seeking powerful booster-stage engines to take their model rockets to the next level. Designed for use in multi-stage rockets, these engines provide a robust initial thrust that propels rockets to impressive heights before igniting the upper stage. With a burn time of 2.09 seconds and a total impulse of 33.68 N-sec, the E16-0 engines ensure reliable and consistent performance for heavier models or ambitious flights.\u003c\/p\u003e\n\u003cp\u003eThese engines are compatible with larger rockets like the Pro Series II™ So Long and are ideal for advanced hobbyists looking to maximize their flight potential. Each pack includes two engines, starters, and plugs, giving you everything needed to power your next launch. Whether you're experimenting with multi-stage designs or seeking a dependable booster engine, the E16-0 delivers the power and reliability you need for thrilling rocketry adventures.\u003c\/p\u003e\n\u003cp\u003eEach package includes 2 engines, 2 starters and 4 starter plugs.\u003c\/p\u003e\n\u003cp\u003eWith their powerful thrust and reliable performance, the E16-0 Engines are an essential addition to any advanced rocketeer’s collection. Pair these engines with your favorite multi-stage rocket and experience the excitement of high-powered launches.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv data-core-is=\"block\" class=\"ecom-block ecom-core core__block elmspace ecom-bpdbfpj6h6 short-description\"\u003e\n\u003cdiv class=\"ecom-element ecom-product-single ecom-product-single__description\"\u003e\n\u003cdiv class=\"ecom-product-single__description-wrapper\"\u003e\n\u003cdiv data-show-type=\"full\" class=\"ecom-product-single__description-container\"\u003e\n\u003cdiv class=\"ecom-product-single__description--paragraph\"\u003e\n\u003cdiv class=\"ecom-html-des\"\u003e\n\u003cp\u003eCompatible Rockets\u003cbr\u003eSo Long\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv data-core-is=\"block\" class=\"ecom-block ecom-core core__block elmspace ecom-jarn3n4g13 hide-on-mobile\"\u003e\n\u003cdiv data-stopdrag=\"true\" class=\"ecom__element element__heading ecom-element ecom-html\"\u003e\n\u003cp class=\"ecom__heading ecom-db\"\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eTotal Impulse\u003c\/strong\u003e\u003cbr\u003e33.68 N-sec\u003cbr\u003e\u003cstrong\u003eTime Delay\u003c\/strong\u003e\u003cbr\u003eNone\u003cbr\u003e\u003cstrong\u003eMax Lift Weight\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003e18 oz (509 g)\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003eMax Thrust\u003c\/strong\u003e\u003cbr\u003e26.44 Newtons (5.9 lbs)\u003cbr\u003e\u003cstrong\u003eThrust Duration\u003c\/strong\u003e\u003cbr\u003e2.09 Seconds\u003cbr\u003e\u003cstrong\u003eLength\u003c\/strong\u003e\u003cbr\u003e4.5 in. (11.4 cm)\u003cbr\u003e\u003cstrong\u003eDiameter\u003c\/strong\u003e\u003cbr\u003e29 mm\u003cbr\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003e2.58 oz. (73.1 g)\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003ePropellant Weight\u003c\/strong\u003e\u003cbr\u003e1.41 oz (40.0 g)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eATTENTION:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003cem\u003eEstes Industries, LLC and Echo Six LLC requires all purchasers and users of Estes® Model Rocket Engines to adhere strictly to all applicable local, state, and federal laws, regulations, and safety standards. The user assumes all responsibility for the safe and lawful use of Estes® products. Estes Industries, LLC and Echo Six LLC expressly disclaims any and all liability for personal injury, property damage, or other loss resulting from the misuse, improper handling, or unauthorized application of its model rocket engines.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003eThese engines cannot be sent to post office boxes. Please be sure to provide a PHYSICAL ADDRESS when purchasing E and F sized engines.\u003c\/p\u003e\n\u003cp\u003eE and F sized engines cannot be shipped to Alaska, Hawaii, Puerto Rico or Guam.\u003c\/p\u003e","brand":"Estes Rockets","offers":[{"title":"Default Title","offer_id":52381015834924,"sku":"EMR-010052","price":34.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/7863\/0444\/files\/010052-E16-0-Model-Rocket-Engines-2-Pack.webp?v=1764370052"},{"product_id":"1-4a3-3t-model-rocket-engines-4pk","title":"1\/4A3-3T Model Rocket Engines (4pk)","description":"\u003cp\u003eThe Estes 1\/4A3-3T is a mini single stage model rocket engine built for lightweight rockets and big smiles. Each retail pack includes 4 engines, 4 starters, and 4 reusable starter plugs so you are ready to fly right away.\u003c\/p\u003e\n\u003cp\u003eSmall but consistent, the 1\/4A3-3T delivers a gentle, dependable boost that is perfect for training flights, classroom fun, and backyard hobby launches. If you want predictable flights and easy recovery for tiny rockets, this little engine punches above its weight.\u003c\/p\u003e\n\u003cdl\u003e\n\u003cdt\u003eIncludes:\u003c\/dt\u003e\n\u003cdd\u003e4 × 1\/4A3-3T Engines\u003c\/dd\u003e\n\u003cdd\u003e4 × Starters\u003c\/dd\u003e\n\u003cdd\u003e4 × Starter Plugs\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cp\u003e\u003cstrong\u003ePLEASE NOTE:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eYou must have a physical address for delivery.\u003c\/p\u003e","brand":"Estes Rockets","offers":[{"title":"Default Title","offer_id":52446345265452,"sku":"EST10010","price":11.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/7863\/0444\/files\/est10010_e2f048e3-8ea2-4c5e-845b-25e07ecd4e36.jpg?v=1777128864"},{"product_id":"1-2a3-2t-model-rocket-engines-4pk","title":"Estes Rockets - 1\/2A3-2T Model Rocket Engines (4pk)","description":"The Estes 1\/2A3-2T is a single-stage 13mm mini engine for lightweight model rockets. With 1.25 N-s impulse, 8.3 N peak thrust, and a 2-second delay, it delivers quick and reliable launches. Packs include 4 engines, 4 igniters, and 4 plugs.\u003cbr\u003e\u003cbr\u003eIdeal for small rockets like Mini Alpha, Mini Bertha, and Mini Honest John, it's perfect for educational, hobbyist, and backyard flying.","brand":"Estes Rockets","offers":[{"title":"Default Title","offer_id":52446345298220,"sku":"EST10011","price":11.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/7863\/0444\/files\/est10011.jpg?v=1766358005"},{"product_id":"a3-4t-model-rocket-engines-4pk","title":"A3-4T Model Rocket Engines (4pk)","description":"\u003cp\u003eThe Estes A3-4T is a mini single-stage model rocket engine designed for rockets up to 2.0 ounces. With a peak thrust of 6.80 newtons, a 0.60-second thrust duration, and a 4-second delay, it delivers dependable performance for lightweight rocket flights.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eEach pack includes four engines, four starters, and four starter plugs, so you have everything needed for multiple launches without purchasing ignition components separately.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe Estes A3-4T engine is a single-stage mini model rocket engine built for lightweight rockets and designed to deliver consistent, reliable performance. With a total impulse of 2.50 N-sec and a peak thrust of 6.80 newtons (1.5 lbs), this 13 mm diameter engine provides a solid boost for rockets weighing up to 2.0 ounces (57 g). Its 4-second delay allows for a steady coast before the ejection charge activates—helping ensure a controlled flight and dependable recovery system deployment.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eWith a thrust duration of 0.60 seconds, the A3-4T delivers a quick, moderate-power lift-off that’s ideal for rockets requiring a longer delay before ejection. Whether you're launching a favorite kit or testing a new build, the A3-4T supplies reliable thrust and timing that supports a predictable flight path—perfect for hobbyists looking for dependable performance from a mini engine.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eEach engine pack includes four A3-4T engines, four starters, and four starter plugs—everything you need for multiple launches. The included starters and plugs ensure reliable ignition with every flight, eliminating the need to purchase ignition components separately and making launch preparation simple and efficient.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eKnown for its consistent performance and Estes’ trusted manufacturing quality, the A3-4T is a dependable choice for model rocketeers flying lightweight rockets. Its proven design, balanced thrust, and predictable delay make it a go-to engine for reliable single-stage flights.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eATTENTION:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003cem\u003eEstes Industries, LLC and Echo Six LLC requires all purchasers and users of Estes® Model Rocket Engines to adhere strictly to all applicable local, state, and federal laws, regulations, and safety standards. The user assumes all responsibility for the safe and lawful use of Estes® products. Estes Industries, LLC and Echo Six LLC expressly disclaims any and all liability for personal injury, property damage, or other loss resulting from the misuse, improper handling, or unauthorized application of its model rocket engines.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdl\u003e\n\u003cdt\u003eIncludes:\u003c\/dt\u003e\n\u003cdd\u003e4 × A3-4T Engines\u003c\/dd\u003e\n\u003cdd\u003e4 × Starters\u003c\/dd\u003e\n\u003cdd\u003e4 × Starter Plugs\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cp\u003e\u003cstrong\u003ePLEASE NOTE:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eYou must have a physical address for delivery.\u003cbr\u003e\u003cb\u003eNote: Ships via USPS Ground Advantage\u003c\/b\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Estes Rockets","offers":[{"title":"Default Title","offer_id":52446345363756,"sku":"EST10013","price":11.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/7863\/0444\/files\/est10013.jpg?v=1766358006"},{"product_id":"a3-6t-model-rocket-engines-4pk","title":"A3-6T Model Rocket Engines, (4pk)","description":"The Estes A3-6T mini engine is a specially produced, 13mm model rocket engine that has a 6-second delay. Enjoy watching your rocket soar at its highest heights for an extra 6 seconds before it starts the descent with this incredible mini engine.\u003cp\u003e\u003c\/p\u003e\u003chr\u003e\u003cdetails open=\"\"\u003e\u003csummary\u003e\u003cb\u003eIncludes:\u003c\/b\u003e\u003c\/summary\u003e\u003cul\u003e\n\u003cli\u003e4 engines\u003c\/li\u003e\n\u003cli\u003e4 starters\u003c\/li\u003e\n\u003cli\u003e4 mini starter plugs\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/details\u003e","brand":"Estes Rockets","offers":[{"title":"Default Title","offer_id":52446345396524,"sku":"EST10014","price":11.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/7863\/0444\/files\/est10014.jpg?v=1777127662"},{"product_id":"a10-3t-model-rocket-engines-4pk","title":"A10-3T Model Rocket Engines (4pk)","description":"\u003cp\u003eThe Estes A10-3T Engines are high-thrust, single-stage mini engines designed for lightweight rockets and quick, exhilarating flights. With a 3-second delay and strong lift power, they’re ideal for modelers looking for speed and dependable altitude gains.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eCompact and powerful, the A10-3T offers fast launches with consistent performance, perfect for Estes mini rockets. Whether you're a beginner or a seasoned hobbyist, these engines deliver reliable excitement in a small format.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe Estes A10-3T Engines are high-thrust mini engines built for exciting launches with lightweight model rockets. Designed as single-stage engines, they deliver quick and powerful liftoffs, making them a favorite for hobbyists who crave fast acceleration and short coast times. With a 3-second delay, these engines are great for rockets that are small, nimble, and engineered for quick altitude gains before deploying recovery systems.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eKnown for their punchy performance in compact builds, the A10-3T offers a perfect blend of speed, simplicity, and fun. Its 13.00 Newton max thrust provides plenty of power for light rockets, while the 0.80-second thrust duration keeps flights brisk and exhilarating. Whether you’re running test flights, experimenting with new designs, or just enjoying weekend launches, these engines provide reliable, consistent results that keep the countdowns coming.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe A10-3T’s compact size and mini engine classification make it compatible with a wide range of Estes mini rockets and launch gear. If you're looking for dependable propulsion in a small package, this engine delivers a high-performance experience without the bulk. It's a great option for younger fliers, new hobbyists, or seasoned rocketeers who enjoy tight, fast flights.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eEach package includes 4 A10-3T engines, 4 starters, and 4 starter plugs—everything needed to get airborne fast. Pair with recovery wadding and a mini launch pad to complete your setup and send your rocket skyward with confidence.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eATTENTION:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003cem\u003eEstes Industries, LLC requires all purchasers and users of Estes® Model Rocket Engines to adhere strictly to all applicable local, state, and federal laws, regulations, and safety standards. The user assumes all responsibility for the safe and lawful use of Estes® products. Estes Industries, LLC expressly disclaims any and all liability for personal injury, property damage, or other loss resulting from the misuse, improper handling, or unauthorized application of its model rocket engines.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003e4 × A10-3T Engines\u003c\/dd\u003e\n\u003cdd\u003e4 × Starters\u003c\/dd\u003e\n\u003cdd\u003e4 × Starter Plugs\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cp\u003e\u003cstrong\u003ePLEASE NOTE:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eYou must have a physical address for delivery.\u003cbr\u003e\u003cb\u003eNote: Ships via USPS Ground Advantage\u003c\/b\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Estes Rockets","offers":[{"title":"Default Title","offer_id":52446345429292,"sku":"EST10015","price":11.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/7863\/0444\/files\/est10015.jpg?v=1766358007"},{"product_id":"1-2a6-2-model-rocket-engines-3pk","title":"Estes Rockets - 1\/2A6-2 Model Rocket Engines, (3pk)","description":"\u003cp\u003eThe Estes 1\/2A6-2 is a single stage engine designed for model rocket flight. It is a standard engine designed for flights in rockets weighing less than 2 ounces, including the engine. Each package includes 3 engines, 4 starters, and 4 starter plugs.\u003c\/p\u003e","brand":"Estes Rockets","offers":[{"title":"Default Title","offer_id":52446345462060,"sku":"EST10016","price":11.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/7863\/0444\/files\/est10016_20cc9d90-b415-4755-b5e6-6b0ec441b67b.jpg?v=1773753205"},{"product_id":"a8-3-model-rocket-engines-3pk","title":"A8-3 Model Rocket Engines (3pk)","description":"\u003cp\u003eThe Estes A8-3 engine is a reliable choice for launching standard-size model rockets to impressive heights. Designed for rockets weighing less than 3.0 ounces, it delivers consistent thrust and a smooth 3-second delay for parachute deployment.\u003c\/p\u003e\n\u003cp\u003ePerfect for beginners and seasoned rocketeers alike, the A8-3 offers a balanced flight profile that makes it ideal for classroom demonstrations, youth group launches, and everyday backyard fun.\u003c\/p\u003e\n\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003e- 3 A8-3 Engines\u003c\/dd\u003e\n\u003cdd\u003e- 4 Starters\u003c\/dd\u003e\n\u003cdd\u003e- 4 Starter Plugs\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cp\u003e\u003cstrong\u003ePLEASE NOTE:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eYou must have a physical address for delivery.\u003c\/p\u003e\n\u003cp\u003eThe A8-3 is one of Estes’ most popular engines—and for good reason. With a powerful yet manageable thrust profile, it’s designed to launch lightweight model rockets up to 500 feet. The 3-second delay allows the rocket to coast at apogee before deploying the recovery system, resulting in picture-perfect flights and gentle landings.\u003c\/p\u003e\n\u003cp\u003eThis engine is ideal for use in smaller, single-stage rockets and offers a great introduction to model rocketry. Whether you're learning the basics or refining your skills, the A8-3 provides a reliable and predictable flight experience that helps build confidence with every launch.\u003c\/p\u003e\n\u003cp\u003eEach A8-3 engine is precision-manufactured for consistent performance, so you can trust it to deliver a thrilling liftoff and smooth recovery every time. It's an excellent option for schools, camps, STEM programs, or anyone seeking a safe and satisfying launch.\u003c\/p\u003e\n\u003cp\u003eThe A8-3 three-pack includes everything needed for multiple flights, including starters, plugs, and recovery wadding. Just add your favorite Estes rocket and a launch system, and you're ready to take off.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eATTENTION:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003cem\u003eEstes Industries, LLC and Echo Six LLC requires all purchasers and users of Estes® Model Rocket Engines to adhere strictly to all applicable local, state, and federal laws, regulations, and safety standards. The user assumes all responsibility for the safe and lawful use of Estes® products. Estes Industries, LLC and Echo Six LLC expressly disclaims any and all liability for personal injury, property damage, or other loss resulting from the misuse, improper handling, or unauthorized application of its model rocket engines.\u003c\/em\u003e\u003c\/p\u003e\n\u003cdiv class=\"ecom-block ecom-core core__block elmspace ecom-e3ua5tbipi hide-on-mobile\"\u003e\n\u003cdiv class=\"ecom__element element__heading ecom-element ecom-html ecom-type-deffault\"\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003cbr\u003eTotal Impulse: 2.50 N-sec\u003cbr\u003eTime Delay: 3 Seconds\u003cbr\u003eMax Lift Weight: 3.0 oz (85 g)\u003cbr\u003eMax Thrust: 10.70 Newtons (2.4 lbs)\u003cbr\u003eThrust Duration: 0.80 Seconds\u003cbr\u003eLength: 2.8 in. (7 cm)\u003cbr\u003eDiameter: 18 mm\u003cbr\u003eWeight: .55 oz. (15.6 g)\u003cbr\u003ePropellant Weight: 0.14 oz (4.1 g)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003cbr\u003e\u003cb\u003eReplaces EST1598\u003c\/b\u003e\u003c\/p\u003e","brand":"Estes Rockets","offers":[{"title":"Default Title","offer_id":52446345494828,"sku":"EST10017","price":16.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/7863\/0444\/files\/010017-A8-3-Engines-Package.png?v=1768056543"},{"product_id":"b4-2-model-rocket-engines-3pk","title":"B4-2 Model Rocket Engines (3pk)","description":"\u003cp\u003eB4-2 Model Rocket Engines (3pk)\u003c\/p\u003e","brand":"Estes Rockets","offers":[{"title":"Default Title","offer_id":52446345527596,"sku":"EST10018","price":18.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/7863\/0444\/files\/est10018.jpg?v=1766358008"},{"product_id":"b4-4-model-rocket-engines-3pk","title":"B4-4 Model Rocket Engines (3pk)","description":"\u003cp\u003eThe Estes B4-4 is single stage engine designed for model rocket flight. This engine is a standard engine designed for flights in rockets weighing less than 3.5 ounces, including the engine. Each package includes 3 engines, 4 starters, and 4 plugs.\u003c\/p\u003e","brand":"Estes Rockets","offers":[{"title":"Default Title","offer_id":52446345560364,"sku":"EST10019","price":18.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/7863\/0444\/files\/est10019.jpg?v=1766358009"},{"product_id":"b6-2-model-rocket-engines-3pk","title":"ESTES - B6-2 Model Rocket Engines, (3pk)","description":"\u003cp\u003eThe Estes B6-2 is a single stage engine designed for model rocket flight. This engine is a standard engine designed for flights in rockets weighing less than 4.5 ounces, including the engine. Each package includes 3 engines, 4 starters, and 4 plugs.\u003c\/p\u003e","brand":"Estes Rockets","offers":[{"title":"Default Title","offer_id":52446345593132,"sku":"EST10020","price":17.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/7863\/0444\/files\/010020-B6-2-Bag.png?v=1768017180"},{"product_id":"c6-3-model-rocket-engines-3pk","title":"Estes Rockets - C6-3 Model Rocket Engines (3pk)","description":"The Estes C6-3 engine is a single stage engine designed for model rocket flight. This engine is a standard engine designed for flights in rockets weighing less than 4 ounces, including the engine. Each package includes 3 engines, 4 starters and 4 plugs.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eReplaces EST1613\u003c\/b\u003e","brand":"Estes Rockets","offers":[{"title":"Default Title","offer_id":52446345658668,"sku":"EST10023","price":13.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/7863\/0444\/files\/est10023_28dae3ce-35d3-48de-9496-850d9fc4714d.jpg?v=1773755590"},{"product_id":"c6-5-model-rocket-engines-3pk","title":"Estes Rockets - C6-5 Model Rocket Engines (3pk)","description":"The Estes C6-5 engine is a single stage engine designed for model rocket flight. This engine is a standard engine designed for flights in rockets weighing less than 4 ounces, including the engine. Each package includes 3 engines, 4 starters and 4 plugs.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eReplaces EST1614\u003c\/b\u003e","brand":"Estes Rockets","offers":[{"title":"Default Title","offer_id":52446345691436,"sku":"EST10024","price":13.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/7863\/0444\/files\/est10024.jpg?v=1766358011"},{"product_id":"c11-3-model-rocket-engines","title":"C11-3 Model Rocket Engines","description":"\u003cp\u003eThe Estes C11-3 Engines deliver powerful, reliable thrust for mid-sized model rockets. With a total impulse of 10.00 N·s and a 3-second delay, they’re perfect for heavier rockets that need a strong boost without reaching extreme altitudes. Ideal for intermediate and advanced rocketeers, the C11-3 bridges the gap between B and D engines, offering controlled, consistent flights and smooth recoveries.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eEach pack includes 2 engines, 2 starters, and 4 starter plugs, giving you everything needed for multiple launches. Whether you're flying a scale model, testing a payload, or operating within field height limits, the C11-3 provides dependable mid-power performance every time.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003ePower your mid-sized model rockets with confidence using the Estes C11-3 Engines. These powerful motors are designed for launches that require more thrust than a standard B engine but don’t need the altitude of a D-class engine. With a total impulse of 10.00 N·s, the C11-3 provides reliable, solid acceleration and a controlled 3-second delay before ejection—ideal for rockets with larger airframes or heavier payloads.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe 3-second delay gives rockets just enough time to reach peak altitude before deploying the recovery system, ensuring safe and consistent descents. Perfect for mid-weight kits or scale models, the C11-3 bridges the gap between lower and higher power flights, making it a versatile choice for rocketeers looking to optimize performance without overshooting field constraints.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eEach pack includes 2 C11-3 engines, along with 2 starters and 4 starter plugs, so you’re ready for multiple successful launches right out of the box. Count on the Estes C11-3 for dependable mid-power performance that takes your model rocketry experience to new heights.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eATTENTION:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003cem\u003eEstes Industries, LLC and Echo Six LLC requires all purchasers and users of Estes® Model Rocket Engines to adhere strictly to all applicable local, state, and federal laws, regulations, and safety standards. The user assumes all responsibility for the safe and lawful use of Estes® products. Estes Industries, LLC and Echo Six LLC expressly disclaims any and all liability for personal injury, property damage, or other loss resulting from the misuse, improper handling, or unauthorized application of its model rocket engines.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003e2 × C11-3 Engines\u003c\/dd\u003e\n\u003cdd\u003e2 × Starters\u003c\/dd\u003e\n\u003cdd\u003e4 × Starter Plugs\u003cbr\u003e\u003cbr\u003e\n\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cp\u003e\u003cstrong\u003ePLEASE NOTE:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eYou must have a physical address for delivery.\u003cbr\u003e\u003cb\u003eNote: Ships via USPS Ground Advantage\u003c\/b\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Estes Rockets","offers":[{"title":"Default Title","offer_id":52446345756972,"sku":"EST10025","price":10.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/7863\/0444\/files\/est10025.jpg?v=1766358011"},{"product_id":"c11-5-model-rocket-engines-2pk","title":"Estes Rockets - C11-5 Model Rocket Engines (2pk)","description":"\u003cp\u003e\u003cspan\u003eThe Estes C11-5 engine is a powerful single-stage engine built for mid-sized model rockets that need a strong boost off the pad. With a 24 mm diameter and 10.00 N-sec of total impulse, it delivers robust performance for flights requiring a medium delay between thrust and ejection.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eWith a 5-second delay and high thrust output, the C11-5 is a solid choice for rockets weighing up to 5 ounces. It provides consistent, dependable launches and is ideal for rockets that need a little more power than a B engine can offer.\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003cdetails open=\"\"\u003e\n\u003csummary\u003e\u003cb\u003eIncludes:\u003c\/b\u003e\u003c\/summary\u003e\n\u003cul\u003e\n\u003cli\u003eEngine x 2\u003c\/li\u003e\n\u003cli\u003eStarter x 2\u003c\/li\u003e\n\u003cli\u003eStarter plug x 4\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/details\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003chr\u003e\n\u003cdetails open=\"\"\u003e\n\u003csummary\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/summary\u003e\n\u003cul\u003e\n\u003cli\u003eThe Estes C11-5 engine is a single stage engine designed for model rocket flight.\u003c\/li\u003e\n\u003cli\u003eThis engine is a 24mm diameter engine designed for rockets with a maximum lift weight of less than 5 ounces.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/details\u003e","brand":"Estes Rockets","offers":[{"title":"Default Title","offer_id":52446345789740,"sku":"EST1523","price":15.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/7863\/0444\/files\/est10026.jpg?v=1773751178"},{"product_id":"d12-3-model-rocket-engines-2pk","title":"D12-3 Model Rocket Engines (2pk)","description":"\u003cp\u003eThe Estes D12-3 engine is a powerful, short-delay motor designed for heavier rockets that need quick recovery deployment. Its high-thrust profile makes it perfect for advanced modelers looking to fly large single-stage designs with confidence.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eEach two-pack includes everything you need for ignition: two D12-3 engines, two starters, and four starter plugs. Whether launching payloads or large airframes, the D12-3 delivers the performance and reliability Estes is known for.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003e2 × D12-3 Engines\u003c\/dd\u003e\n\u003cdd\u003e2 × Starters\u003c\/dd\u003e\n\u003cdd\u003e4 × Starter Plugs\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cp\u003e\u003cstrong\u003ePLEASE NOTE:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eYou must have a physical address for delivery.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe Estes D12-3 engine delivers high-thrust power for heavier model rockets that require a shorter delay before deployment. Ideal for larger, draggy airframes or rockets with broad fins, this engine provides the force needed to achieve stable, safe flights from liftoff to recovery. With its balanced 3-second delay, the D12-3 is engineered for rockets that need their recovery systems to activate shortly after peak altitude, helping prevent tumble or drift.\u003c\/p\u003e\n\u003cp\u003eAs part of the D engine family, the D12-3 is known for its punchy boost and reliability, making it a solid choice for rockets designed with extra weight or staging complexity. Whether you're flying a single-stage rocket that needs a quick deployment or experimenting with payloads, this engine offers a dependable performance profile that hobbyists trust.\u003c\/p\u003e\n\u003cp\u003eEach pack includes two D12-3 engines, along with two starters and four starter plugs, giving you what you need for multiple launch attempts or quick back-to-back flights. Estes engines are precision-manufactured and quality-tested to meet rigorous standards, ensuring consistent and safe ignition every time.\u003c\/p\u003e\n\u003cp\u003eTrusted by generations of rocketeers, the D12-3 bridges the gap between performance and control. It's a go-to choice for those looking to expand their skills with more demanding models while maintaining Estes’ signature dependability and ease of use.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eATTENTION:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003cem\u003eEstes Industries, LLC and Echo six LLC requires all purchasers and users of Estes® Model Rocket Engines to adhere strictly to all applicable local, state, and federal laws, regulations, and safety standards. The user assumes all responsibility for the safe and lawful use of Estes® products. Estes Industries, LLC and Echo six LLC expressly disclaims any and all liability for personal injury, property damage, or other loss resulting from the misuse, improper handling, or unauthorized application of its model rocket engines.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Estes Rockets","offers":[{"title":"Default Title","offer_id":52446345822508,"sku":"EST10027","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/7863\/0444\/files\/est10027_307c3422-4a30-4f28-ab61-e3e9a4c63f59.jpg?v=1777129757"},{"product_id":"d12-5-model-rocket-engines-2pk","title":"Estes Rockets - D12-5 Model Rocket Engines (2pk)","description":"\u003cp\u003eThe Estes D12-5 engine is a high-thrust motor with a 5-second delay, perfect for rockets that benefit from extended coast time before recovery deployment. It’s ideal for heavier single- or multi-stage models requiring reliable power and timing.\u003c\/p\u003e\n\u003cp\u003eEach package includes two engines, two starters, and four starter plugs. With Estes’ trusted quality and NAR certification, the D12-5 is built for smooth, dependable launches every time.\u003c\/p\u003e\n\u003cdl\u003e\n\u003cdt\u003eIncludes:\u003c\/dt\u003e\n\u003cdd\u003e2 × D12-5 Engines\u003c\/dd\u003e\n\u003cdd\u003e2 × Starters\u003c\/dd\u003e\n\u003cdd\u003e4 × Starter Plugs\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cp\u003e\u003cstrong\u003ePLEASE NOTE:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eYou must have a physical address for delivery.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe Estes D12-5 engine is a high-thrust motor built for model rockets that need strong liftoff power and a longer coast before deploying their recovery system. With a 5-second delay between engine burnout and ejection, it gives your rocket extra time to climb before the parachute or other recovery method activates—perfect for heavier rockets or those designed for extended flights.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThis engine is a great match for a variety of Estes kits and custom builds that support D-engine power. Whether you're flying a single-stage rocket or the upper stage of a multi-stage setup, the D12-5 delivers reliable, consistent performance with every launch. The longer delay helps improve flight stability and timing, giving your rocket a smoother arc and more controlled descent.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eEach package includes two D12-5 engines, two starters, and four starter plugs. You’ll have what you need to get your rocket ready for the next launch, with parts that fit easily into standard Estes engine mounts. Everything is packaged with care and built to meet Estes’ trusted quality standards.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eWhether you’re moving up from smaller C engines or fine-tuning a more advanced rocket, the D12-5 is a solid, dependable choice. It offers the right mix of power and delay for rockets that need a little more time in the sky before coming back to Earth.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eATTENTION:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003cem\u003eEstes Industries, LLC and Echo Six LLC requires all purchasers and users of Estes® Model Rocket Engines to adhere strictly to all applicable local, state, and federal laws, regulations, and safety standards. The user assumes all responsibility for the safe and lawful use of Estes® products. Estes Industries, LLC and Echo Six LLC expressly disclaims any and all liability for personal injury, property damage, or other loss resulting from the misuse, improper handling, or unauthorized application of its model rocket engines.\u003c\/em\u003e\u003c\/p\u003e","brand":"Estes Rockets","offers":[{"title":"Default Title","offer_id":52446345855276,"sku":"EST10028","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/7863\/0444\/files\/est10028_9c20dcdf-1f74-401b-b5f0-760f25c5804a.jpg?v=1773754000"},{"product_id":"e12-4-model-rocket-engines-3pk","title":"E12-4 Model Rocket Engines, (2pk)","description":"\u003cp\u003eThe Estes E12-4 engine delivers impressive power and reliability for your next launch, making it a top choice for rocketeers ready to step up from smaller engines. With a 24mm diameter and 30.00 N-sec of total impulse, this versatile engine provides consistent, exciting flights that never fail to thrill. Whether you're building new rockets or upgrading existing favorites, the E12-4 offers dependable thrust and excellent performance across a variety of models.\u003cbr\u003e\u003cbr\u003eEngineered with precision and designed for excitement, the E12-4 is perfect for upper stage flights but can also be used as a single stage engine. With a strong maximum thrust of 30.60 Newtons and a thrust duration of 2.70 seconds, it strikes the perfect balance between raw lift-off power and sustained acceleration. The 4-second delay adds an ideal pause before ejection, creating smooth, realistic flight sequences that mimic the real thing.\u003cbr\u003e\u003cbr\u003eCapable of lifting rockets up to 17 ounces, the E12-4 is an excellent choice for mid-size rockets that need just the right amount of strength to reach soaring altitudes. It's a versatile addition to your engine collection, giving you flexibility to experiment with different models and flight profiles while ensuring reliable ignition and performance every time you launch.\u003cbr\u003e\u003cbr\u003eEach E12-4 engine pack comes with everything you need to get flying quickly, including starters and starter plugs for easy setup. Whether you're preparing for a weekend launch or stocking up for multiple flights, the Estes E12-4 ensures that every mission begins with the perfect balance of power, timing, and excitement.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eATTENTION:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThese engines cannot be sent to post office boxes. Please be sure to provide a PHYSICAL ADDRESS when purchasing E and F sized engines.\u003cbr\u003e\u003cb\u003eNote: HAZMAT Shipping Restrictions Apply\u003c\/b\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eE and F sized engines cannot be shipped to Alaska, Hawaii, Puerto Rico or Guam.\u003c\/p\u003e\n\u003chr\u003e\n\u003cdetails open=\"\"\u003e\n\u003csummary\u003e\u003cb\u003eIncludes:\u003c\/b\u003e\u003c\/summary\u003e\n\u003cul\u003e\n\u003cli\u003e2 E12-4 Engines\u003c\/li\u003e\n\u003cli\u003e2 Starters\u003c\/li\u003e\n\u003cli\u003e4 Starter Plugs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"ecom-block ecom-core core__block elmspace ecom-iag81uutdh\"\u003e\n\u003cdiv class=\"ecom__element element__heading ecom-element ecom-html ecom-type-deffault\"\u003e\n\u003ch2 class=\"ecom__heading ecom-db\"\u003eOverview\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ecom-block ecom-core core__block elmspace ecom-bpdbfpj6h6 short-description\"\u003e\n\u003cdiv class=\"ecom-element ecom-product-single ecom-product-single__description\"\u003e\n\u003cdiv class=\"ecom-product-single__description-wrapper\"\u003e\n\u003cdiv class=\"ecom-product-single__description-container\" data-show-type=\"full\"\u003e\n\u003cdiv class=\"ecom-product-single__description--paragraph\"\u003e\n\u003cdiv class=\"ecom-html-des\"\u003e\n\u003cp\u003eThe Estes E12-4 engine delivers impressive power and reliability for your next launch, making it a top choice for rocketeers ready to step up from smaller engines. With a 24mm diameter and 30.00 N-sec of total impulse, this versatile engine provides consistent, exciting flights that never fail to thrill. Whether you’re building new rockets or upgrading existing favorites, the E12-4 offers dependable thrust and excellent performance across a variety of models.\u003c\/p\u003e\n\u003cp\u003eEngineered with precision and designed for excitement, the E12-4 is perfect for upper stage flights but can also be used as a single stage engine. With a strong maximum thrust of 30.60 Newtons and a thrust duration of 2.70 seconds, it strikes the perfect balance between raw lift-off power and sustained acceleration. The 4-second delay adds an ideal pause before ejection, creating smooth, realistic flight sequences that mimic the real thing.\u003c\/p\u003e\n\u003cp\u003eCapable of lifting rockets up to 17 ounces, the E12-4 is an excellent choice for mid-size rockets that need just the right amount of strength to reach soaring altitudes. It’s a versatile addition to your engine collection, giving you flexibility to experiment with different models and flight profiles while ensuring reliable ignition and performance every time you launch.\u003c\/p\u003e\n\u003cp\u003eEach E12-4 engine pack comes with everything you need to get flying quickly, including starters and starter plugs for easy setup. Whether you’re preparing for a weekend launch or stocking up for multiple flights, the Estes E12-4 ensures that every mission begins with the perfect balance of power, timing, and excitement.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eATTENTION:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003cem\u003eEstes Industries, LLC and Echo Six LLC requires all purchasers and users of Estes® Model Rocket Engines to adhere strictly to all applicable local, state, and federal laws, regulations, and safety standards. The user assumes all responsibility for the safe and lawful use of Estes® products. Estes Industries, LLC and Echo Six LLC expressly disclaims any and all liability for personal injury, property damage, or other loss resulting from the misuse, improper handling, or unauthorized application of its model rocket engines.\u003cbr\u003e\u003cbr\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e","brand":"Estes Rockets","offers":[{"title":"Default Title","offer_id":52446345888044,"sku":"EST10029","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/7863\/0444\/files\/est10029.jpg?v=1766358013"},{"product_id":"f15-4-29mm-model-rocket-engines-2pk","title":"F15-4 29mm Model Rocket Engines (2pk)","description":"Each package includes 2 engines, 2 starters and 4 starter plugs.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eReplaces EST1651\u003c\/b\u003e","brand":"Estes Rockets","offers":[{"title":"Default Title","offer_id":52446345920812,"sku":"EST10031","price":38.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/7863\/0444\/files\/est10031.jpg?v=1766358013"},{"product_id":"f15-6-29mm-model-rocket-engines-2pk","title":"F15-6 29mm Model Rocket Engines (2pk)","description":"\u003cp\u003ePower up your mid-size model rockets with the Estes F15-6 Engines. Designed for impressive liftoffs, these 29 mm engines deliver extended thrust for thrilling, high-performance flights. With a 6-second delay, they’re perfect for heavier rockets that require extra coast time before recovery deployment.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe F15-6 offers a total impulse of 49.61 N-sec and a long 3.45-second thrust duration, producing powerful, smooth launches. Whether you’re flying for fun or testing your skills with altitude challenges, this engine gives you the performance needed to push your rockets further into the sky.\u003c\/p\u003e\n\u003cdl\u003e\n\u003cdt\u003eIncludes:\u003c\/dt\u003e\n\u003cdd\u003e2 × F15-6 Engines\u003c\/dd\u003e\n\u003cdd\u003e2 × Starters\u003c\/dd\u003e\n\u003cdd\u003e4 × Starter Plugs\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cp\u003e\u003cstrong\u003eATTENTION:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThese engines cannot be sent to post office boxes. Please be sure to provide a PHYSICAL ADDRESS when purchasing E and F sized engines.\u003c\/p\u003e\n\u003cp\u003eE and F sized engines cannot be shipped to Alaska, Hawaii, Puerto Rico or Guam.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eNote: HAZMAT Shipping Restrictions Apply\u003c\/b\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eTake your mid-powered rocket flights to new heights with the Estes F15-6 Engine. This 29 mm engine packs an impressive 49.61 N-sec total impulse and delivers a maximum thrust of 25.26 Newtons—giving your rockets the boost they need for strong, stable launches. It’s ideal for experienced modelers looking for consistent, long-duration thrust and reliable performance across a wide variety of heavier rocket designs.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eWith a 6-second delay between burnout and recovery deployment, the F15-6 is tailored for mid-size rockets that benefit from longer coast phases. This extended delay allows rockets to climb to higher altitudes before the ejection charge activates, maximizing performance in rockets with slightly heavier payloads or larger airframes. The 3.45-second burn time provides a smooth and powerful push, enhancing flight dynamics and altitude potential.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eAt 4.5 inches in length and weighing just 3.66 ounces, this engine fits rockets that use 29 mm engine mounts and is especially useful for flights where precise timing and altitude gains are important. It’s a reliable choice for rockets requiring a balance between thrust power and delay timing. The propellant weight of 2.12 ounces ensures you get a high-energy burn for exciting liftoffs and a thrilling flight experience every time.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eWhether you’re launching for fun, altitude, or testing your rocketry design skills, the F15-6 delivers a dependable and rewarding launch experience. Pair it with your favorite Estes rocket that calls for an F-engine and enjoy the confidence that comes with top-tier performance and long burn capability.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eATTENTION:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003cem\u003eEstes Industries, LLC and Echo Six LLC requires all purchasers and users of Estes® Model Rocket Engines to adhere strictly to all applicable local, state, and federal laws, regulations, and safety standards. The user assumes all responsibility for the safe and lawful use of Estes® products. Estes Industries, LLC and  Echo Six LLC expressly disclaims any and all liability for personal injury, property damage, or other loss resulting from the misuse, improper handling, or unauthorized application of its model rocket engines.\u003c\/em\u003e\u003c\/p\u003e","brand":"Estes Rockets","offers":[{"title":"Default Title","offer_id":52446345953580,"sku":"EST10032","price":38.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/7863\/0444\/files\/est10032.jpg?v=1766358014"},{"product_id":"e16-4-29mm-model-rocket-engines-2pk","title":"E16-4 29mm Model Rocket Engines (2pk)","description":"\u003cp\u003eThe E16-4 Engines (29 mm) by Estes Rockets are a versatile and powerful option for mid to high-powered model rockets. Designed for single-stage flights or as upper-stage boosters, these engines provide a total impulse of 33.68 N-sec and a 4-second delay for precise parachute deployment. With the ability to lift rockets weighing up to 20 ounces (566 grams) to impressive altitudes, the E16-4 offers reliable performance for thrilling launches. Ideal for advanced hobbyists, each package includes two engines, two starters, and four starter plugs, making it easy to prepare for multiple flights.\u003c\/p\u003e\n\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003e2 × E16-4 Engines\u003c\/dd\u003e\n\u003cdd\u003e2 × Starters\u003c\/dd\u003e\n\u003cdd\u003e4 × Starter Plugs\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cp\u003e\u003cstrong\u003eATTENTION:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThese engines cannot be sent to post office boxes. Please be sure to provide a PHYSICAL ADDRESS when purchasing E and F sized engines.\u003c\/p\u003e\n\u003cp\u003eE and F sized engines cannot be shipped to Alaska, Hawaii, Puerto Rico or Guam.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe E16-4 Engines (29 mm) by Estes Rockets deliver powerful and reliable performance for mid to high-powered model rockets. Ideal for single-stage flights or upper stages of multi-stage designs, these engines provide an impressive total impulse of 33.68 N-sec and a 4-second delay for optimal parachute deployment. Whether you're launching larger rockets or experimenting with advanced models, the E16-4 is the perfect choice for rocketeers seeking precision and altitude.\u003c\/p\u003e\n\u003cp\u003eDesigned for rockets weighing up to 20 ounces (566 grams), the E16-4 engine ensures smooth and consistent thrust, lifting your rocket to incredible heights. Each package includes two engines, two starters, and four starter plugs, making it easy to prepare for multiple launches. Whether you're an advanced hobbyist or looking to expand your fleet with higher-performance options, the E16-4 offers a dependable and exhilarating experience.\u003c\/p\u003e\n\u003cp\u003eWith its reliable thrust and versatility, the E16-4 Engine is an essential addition to any rocketeer’s collection. Launch your next adventure with confidence and experience the power of Estes!\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eATTENTION:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003cem\u003eEstes Industries, LLC and Echo Six LLC requires all purchasers and users of Estes® Model Rocket Engines to adhere strictly to all applicable local, state, and federal laws, regulations, and safety standards. The user assumes all responsibility for the safe and lawful use of Estes® products. Estes Industries, LLC and Echo Six LLC expressly disclaims any and all liability for personal injury, property damage, or other loss resulting from the misuse, improper handling, or unauthorized application of its model rocket engines.\u003c\/em\u003e\u003c\/p\u003e","brand":"Estes Rockets","offers":[{"title":"Default Title","offer_id":52446346019116,"sku":"EST10033","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/7863\/0444\/files\/est10033.jpg?v=1766358015"},{"product_id":"e16-6-29mm-model-rocket-engine-2pk","title":"E16-6 29mm Model Rocket Engine (2pk)","description":"The E16-6 Engine (29 mm) by Estes Rockets is a powerful and versatile engine designed for single-stage and upper-stage flights. With a total impulse of 33.68 N-sec and a 6-second delay, it's perfect for mid to high-power rockets requiring precise parachute deployment and reliable performance. Capable of lifting rockets up to 16 ounces (453 grams) to impressive altitudes, this engine is ideal for advanced hobbyists looking to achieve smooth, high-energy launches. Each pack includes two engines, two starters, and four starter plugs, making it easy to prepare for multiple exciting flights.\u003cp\u003e\u003c\/p\u003e\u003chr\u003e\u003cdetails open=\"\"\u003e\u003csummary\u003e\u003cb\u003eIncludes:\u003c\/b\u003e\u003c\/summary\u003e\u003cul\u003e\n\u003cli\u003e2 E16-6 Engines\u003c\/li\u003e\n\u003cli\u003e2 Starters\u003c\/li\u003e\n\u003cli\u003e4 Starter Plugs\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/details\u003e","brand":"Estes Rockets","offers":[{"title":"Default Title","offer_id":52446346051884,"sku":"EST10034","price":35.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/7863\/0444\/files\/est10034.jpg?v=1766358015"},{"product_id":"1-2a3-4t-model-rocket-engines-4pk","title":"1\/2A3-4T Model Rocket Engines, (4pk)","description":"\u003cp\u003eThe Estes 1\/2A3-4T engine is a mini, single-stage engine built for lightweight model rockets up to 1.0 ounce. With a total impulse of 1.25 N-sec, a maximum thrust of 8.3 newtons, and a brief 0.3-second thrust duration, it’s designed for quick, reliable flights in smaller models.\u003c\/p\u003e\n\u003cp\u003eEach 1\/2A3-4T engine pack includes four engines, four starters, and four starter plugs, providing hobbyists with the essentials for multiple launches. Its compact size and dependable performance make it an ideal choice for hobbyists and educators seeking a reliable mini engine option.\u003c\/p\u003e\n\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003e4 × 1\/2A3-4T Engines\u003c\/dd\u003e\n\u003cdd\u003e4 × Starters\u003c\/dd\u003e\n\u003cdd\u003e4 × Starter Plugs\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cp\u003e\u003cstrong\u003ePLEASE NOTE:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eYou must have a physical address for delivery.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe Estes 1\/2A3-4T engine is a dependable choice for launching lightweight model rockets. Designed as a mini engine with a 13 mm diameter, it delivers a total impulse of 1.25 N-sec and a peak thrust of 8.3 newtons. This quick-thrust, single-stage engine is ideal for smaller rockets that weigh up to 1.0 ounce at liftoff, giving them a powerful and reliable start to flight. With a time delay of 4 seconds before ejection, it allows for stable coasting and safe deployment of recovery systems.\u003c\/p\u003e\n\u003cp\u003eBuilt with precision for modelers who value consistency, the 1\/2A3-4T features a compact size of just 1.8 inches in length and weighs only 0.23 ounces. Despite its small stature, it packs a sharp burst of thrust lasting 0.3 seconds—perfect for short, fast flights in light rocket models. The engine’s performance is tuned to work with Estes’ mini engine-powered kits, providing dependable launches every time.\u003c\/p\u003e\n\u003cp\u003eEach engine pack includes everything needed for multiple launches: four 1\/2A3-4T engines, four starters, and four starter plugs. This convenient packaging is ideal for hobbyists who want to enjoy repeat flights without the need for additional components. The included starters and plugs simplify the ignition process, ensuring reliable performance from launch to ejection.\u003c\/p\u003e\n\u003cp\u003ePerfect for beginners and seasoned flyers alike, the Estes 1\/2A3-4T engine offers a balanced combination of thrust, delay, and compact power. Whether for hobby flying, educational projects, or flight testing, this engine provides a great entry point into mini-engine rocketry while delivering reliable Estes quality with every launch.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eATTENTION:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003cem\u003eEstes Industries, LLC and Echo Six LLCrequires all purchasers and users of Estes® Model Rocket Engines to adhere strictly to all applicable local, state, and federal laws, regulations, and safety standards. The user assumes all responsibility for the safe and lawful use of Estes® products. Estes Industries, LLC and Echo Six LLC expressly disclaims any and all liability for personal injury, property damage, or other loss resulting from the misuse, improper handling, or unauthorized application of its model rocket engines.\u003c\/em\u003e\u003c\/p\u003e","brand":"Estes Rockets","offers":[{"title":"Default Title","offer_id":52446346084652,"sku":"EST10035","price":11.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/7863\/0444\/files\/est10035.jpg?v=1766358015"},{"product_id":"a8-5-model-rocket-engines-3pk","title":"Estes Rockets - A8-5 Model Rocket Engines, (3pk)","description":"The Estes A8-5 Engine offers strong peak thrust and a 5 second delay, making it perfect for lightweight rockets that benefit from longer coast times before recovery deployment. It supports launch weights up to 2.0 ounces and delivers smooth, high-altitude flights.\u003cbr\u003e\u003cbr\u003eThis standard 18 mm engine fits a wide range of Estes rockets and comes in a 3-pack with igniters and plugs. A reliable choice for students, educators, and hobbyists seeking performance and control in every launch.\u003cp\u003e\u003c\/p\u003e\u003chr\u003e\u003cdetails open=\"\"\u003e\u003csummary\u003e\u003cb\u003eIncludes:\u003c\/b\u003e\u003c\/summary\u003e\u003cul\u003e\n\u003cli\u003e3 A8-5 Engines\u003c\/li\u003e\n\u003cli\u003e4 Starters\u003c\/li\u003e\n\u003cli\u003e4 Starter Plugs\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/details\u003e","brand":"Estes Rockets","offers":[{"title":"Default Title","offer_id":52446346117420,"sku":"EST10036","price":17.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/7863\/0444\/files\/est10036.jpg?v=1766358016"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/7863\/0444\/collections\/file_bf542c83-e53c-4956-b395-6a37ce50ca73.webp?v=1735445523","url":"https:\/\/www.echosixhobbies.com\/collections\/engines.oembed?page=2","provider":"Echo Six Hobbies","version":"1.0","type":"link"}