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

RC HPI R40 Nitro 2 Speed 18 Tooth Pinion Gear Aluminum Green (1) 76963

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

HPI Nitro RS43 22Tx12mm (1M) Orange Threaded 2-Speed Pinion Gear HPI106631

Steel 8mm 32T MOD 1 M1 PINION GEAR TRAXXAS/OFNA/MUGEN/SERPENT/ARRMA/HPI/Losi

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

HPI 76970 Threaded Pinion 20Tx16 For R40

HD steel 8mm 50T MOD 1 M1 PINION GEAR TRAXXAS/OFNA/MUGEN/SERPENT/ARRMA/HPI/Losi