HPI stock replacement spur gear for the Nitro RS4, Nitro Racer, Nitro Mini, and MT RS4.
HPI Replacement Arm Brace Set RS4. For the Front or Rear Suspension.
HPI Sport Shock Body 2-Piece 1/10 RS4 Rally. Factory Replacement Shock Set for the HPI RS4 Rally. These are the Short Set;(45-56mm)
HPI replacement clutch bell for the Nitro RS4. This mounts onto the engine and houses the clutch shoes.
HPI 0.7 mm Clutch Springs.