The Estes C11-5 engine fills an important niche for customers who have mastered beginner launches and are ready to explore more powerful model rocket engines. With a 24 mm diameter and a total impulse of 10.00 N-sec, this single-stage engine delivers impressive thrust and altitude potential for rockets weighing up to 5 ounces. It’s a natural step up for hobbyists looking to expand their flying capabilities without jumping to higher-cost, high-power options.

This engine is designed for dependable, high-thrust launches with a 0.80-second thrust duration and a 5-second coast before ejection. It provides just the right balance of power and delay for stable flight and optimized parachute deployment. The C11-5’s peak thrust of 22.10 newtons makes it ideal for rockets too heavy for B or standard C motors, yet not quite in need of E-class power.

With a wide compatibility range and a proven performance profile, the C11-5 is an essential part of any engine assortment that targets intermediate rocketeers. Its solid specs make it especially appealing to hobby shops, hardware stores, and toy retailers looking to offer more than just entry-level engines.

Each pack includes two C11-5 engines, two starters, and four starter plugs. Stocking the C11-5 gives your customers the perfect opportunity to elevate their next launch while ensuring dependable results every time.

ATTENTION: Estes 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.