HPI Racing Heavy Duty Aluminum Pinion/Clutch Mount is a machined alloy option part for HPI Baja 1/5th scale vehicles.

HPI Racing hyeavy duty heatsink motor plate is precision machined from high strength 7075S aircraft grade aluminum for extreme durability. The extra thick 10mm plate is gunmetal anodized to match other aluminum parts.

Upgrade your HPI Savage Flux monster truck with this HD Heatsink Motor Mounts.

HPI Steel Spur Gear Set 47T. HPI Racing is proud to introduce this new line of heavy duty Steel Spur Gear Sets for the Savage line of monster trucks.

HPI Steel Spur Gear Set 49T. HPI Racing is proud to introduce this new line of heavy duty Steel Spur Gear Sets for the Savage line of monster trucks.

HPI Steel Spur Gear Set 52T. HPI Racing is proud to introduce this new line of heavy duty Steel Spur Gear Sets for the Savage line of monster trucks.

HPI Racing machined bulletproof diff bevel gear set is our toughest diff set-up ever for the Savage monster truck line. The ring gear and pinion gears are precision machined from high carbon steel and have stronger gear profiles for the ultimate in durability. The 29T gear is machined to use the included "oversized" ball bearing for extra durability and efficiency.

HPI Heavy-Duty Final Gear Set (P1x38T/P1x13T).

HPI replacment differential for the Savage Truck.

HPI optional gear brace set for the HPI Nitro RS4, Nitro RS4 2, Nitro RS4 RTR, Nitro RS4 Racer, Nitro RS4 Racer 2, Super Nitro RS4, and Nitro Mini.

HPI optional 52 Tooth Light Weight Steel Spur Gear for the Hellfire Monster Truck.

HPI optional 53 Tooth Light Weight Steel Spur Gear for the Hellfire Monster Truck.

HPI Bevel Gear Set for the Baja 5B.

HPI 47 tooth steel spur gear used in the optional 47 Tooth steel spur gear set for the Savage series.

HPI 49 tooth steel spur gear used in the optional 49 Tooth steel spur gear set for the Savage series.

HPI Savage Flux owners can now go for extreme top speed with this 39T High Speed Idler Gear and Shaft Set.

HPI Reverse Module for the Savage. These gears installed make reverse possible.

HPI replacement assembled differential gear for the E-Savage. 

HPI 52 Tooth Steel Spur Gear for the Hellfire Monster Truck