Includes 3 - B4-4 Engines, 3 - Starters, 4 - Starter Plugs
This engine is a standard engine designed for flights in rockets weighing less than 3.5 ounces, including the engine
Single stage engine
Estes model rocket engines are simply the best! We have been making rocket engines for over 50 years. Estes developed
the first machine to mass produce solid propellant model rocket engines which gave rocketeers a consistent and reliable
way to launch rockets. Because of our quality and reliability, Estes engines are considered by many to be the standard
in the model rocket industry.