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

PLEASE NOTE: You must have a physical address for delivery.