Estes 10021 B6-4 Bagged Rocket Engines with Starters and Plugs

3 Pack

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

Note: You must have a physical address for delivery.