Estes B4-2 Engines EST10018

Explore the Estes B4-2 Engines at MegaHobby. This model rocket engine pack is selected by its complete engine designation, not simply by the letter class.

Product features and specifications

The Estes B4-2 is a dependable single stage model rocket engine built for consistent, enjoyable flights in lightweight rockets. Designed to deliver steady, usable thrust for rockets under 4 ounces, this engine gives hobbyists reliable lift and smooth flight profiles that make launching simple and satisfying.

Whether you are teaching a new rocketeer, flying at a club launch, or enjoying backyard hobby flights, the B4-2 balances performance and predictability. Its clean burn and dependable ignition help reduce launch day surprises so you can focus on building great flights and good memories.

Includes:

3 × B4-2 Engines

4 × Starters

4 × Starter Plugs

Select the exact recommended engine

Match the full engine code, physical size and application to the rocket manufacturer’s instructions. Different delays and booster designations are not interchangeable choices. Check the listed pack contents before ordering and confirm which launch supplies are already included.

Explore Estes at MegaHobby

Browse Estes rockets and supplies and Estes Model Rocket Engines. Explore the wider Model Rocketry collection, then find building tools and finishing materials in the Paint Store.