Description

                    Sold In Store Only!!!

The 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.

Ideal 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.

Includes:

– 3 B6-4 Engines

– 4 Starters

– 4 Starter Plugs

Explore more styles from our Rockets collection.

Explore more from our collection.