The Pro Series II™ 29 mm Motor Retainer Set brings unmatched convenience to your rocketry experience. Instead of relying on clips or friction fits, this threaded retainer ensures your engine is locked in tight until it’s time for removal. The quick-turn system saves you valuable prep time, making your launch day smoother and more enjoyable.

Durable, Lightweight Construction

Made from heat-resistant ABS plastic, this retainer is engineered to withstand the stresses of repeated launches and ejection charges. Its lightweight design minimizes any effect on flight performance, while its rugged build guarantees long-lasting reliability across countless launches.

Compatible with Multiple Motors

Perfectly suited for Estes 29 mm black powder motors like the E16 and F15, as well as most 29 mm composite motors, this retainer offers flexibility for rocketeers who like to experiment with different power levels. Whatever your mission, you’ll have the confidence of knowing your motor is secured properly.

An Essential Pro Series II™ Upgrade

Whether you’re building your first mid-power rocket or expanding your Pro Series II™ fleet, the 29 mm Motor Retainer Set is a must-have accessory. It provides security, simplicity, and strength—everything you need to make your launches safer and more efficient. Add this essential component to your rocket and elevate your flying experience.