HPI 75026 R40 FRONT ONE WAY DIFFERENTIAL

HPI Racing Clutch Parts for the Nitro R40

HPI RS4 Nitro 3 19T Threaded Aluminum Pinion Gear HPI76979

HPI Racing 76963 Threaded Pinion Gear 18Tx12mm (1M/1st GEAR/2SPEED) R40

HPI Racing 76971 Threaded Pinion Gear 21Tx16mm (1M/2ND GEAR/2SPEED) R40

Vintage HPI Nitro R40 17T 1st 1M Threaded Pinion Gear for 2-Speed Transmission !

HPI 76969 Threaded Pinion Gear (19T * 16mm) (1M/2nd Gear/2 Speed)

HPI Racing Threaded Pinion Gear 21Tx12mm (0.8M/1ST/2 Speed) HPI77011