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 ...
differential washers for the HPI Hellfire Monster Truck. These washers are used inside the front, center and rear differentials between the bevel gear and the differential housing. These can wear out, it ...
are compatible with the HPI Sprint, Wheely King and Crawler King models, and are available in multiple tooth count options to fine tune torque and top speed. This product was added to ...
HPI Savage 25 RTR, and Savage SS monster trucks. Dual layers of micro density foam help provide maximum air filtration for extended engine life, even in dusty conditions. The filter element size ...