The Estes B4-4 is single stage engine designed for model rocket flight

and is bound to turn heads at the local racetrack

meaning engineers can explore the relationship between man and machine for assisted and autonomous technologies

Additional Drag Brake

Genuine HPI spare parts for ensured quality

Whitz Racing Products - 1/10 Workhorse Front & Rear 2.2" 12mm Wheels ASC80946 The Estes B4-4 is singleWhitz Racing Products Workhorse 2. 2" Wheels. Not only does the Workhorse Wheel have the look and feel of a modern full size sprint car wheel, but for those those looking for additional colors and options, these are compatible with the Wheel Cover Stickers! NO WHEEL COVERS INCLUDED IN THIS OPTION. SOLD SEPARATELY. Includes: (2) Whiplash 2. 2" Front Wheels (2) Whiplash 2. 2" Rear Wheels Features: Specifically Made for Dirt Oval Racing Scale Beadlock