Mean, lean and wicked! D and E engine powered at its finest! Breaks down for easy transport.

The B6-4 is a medium impulse engine that delivers high altitude flights. It works great for launching larger, heavier rockets, too. Estes engine bulk packs are convenient and include everything your students need to prepare their rockets for launching.

PLEASE NOTE: This item will ship by US Postal Service only. You MUST HAVE a physical mailbox or post office box for delivery.

ENGINES FOR MODEL ROCKETS

4 – 1/4A3-3T Engines
4 – Starters
4 – Starter Plugs

PLEASE NOTE: This item will ship by US Postal Service only. You MUST HAVE a physical mailbox or post office box for delivery.

ENGINES FOR MODEL ROCKETS

2 – F15-6 Engines
2 – Starters
4 – Starter Plugs

ATTENTION: Additional Hazardous Materials shipping and handling charge of $35.49 will be applied at checkout.

ATTENTION: These engines cannot be sent to post office boxes. Please be sure to provide a PHYSICAL ADDRESS when purchasing E and F sized engines.