Mount. This optional spur gear mount for the HPI Sport 3 is the perfect upgrade for your ride. Constructed from durable and lightweight machined aluminum this spur mount sheds significant rotating weight ...

Steel Spiral Cut Ring and Pinion Gear Set. Features: Steel is CNC machined and hardened Precision machined spiral cut gears for increased torque transfer, smooth running, and less vibration and noise than ...

Gears for the HPI E10 Drifter. A lower tooth count on the pinion gear will give you more acceleration, while a higher tooth count will give you extra top speed. Have a ...

bearings for the HPI Hellfire Monster Truck. These 8x16x5 rubber sealed bearings are the standard bearing for 1/8th scale off-road vehicles, both for internal bearings in the diff cases as well as ...