HPI RACING 76962 Threaded Pinion Gear R40/purple 17Tx12mm (1M/1ST Gear/2Speed)

HPI RACING 76969 Threaded Pinion Gear R40/purple 19Tx12mm (1M/1ST Gear/2Speed)

HPI RACING 76968 Threaded Pinion Gear R40/purple 18Tx16mm (1M/1ST Gear/2Speed)

RC HPI R40 Nitro 2 Speed 20 Tooth Pinion Gear Aluminum Red (1) 76970

HPI RACING 76960 Threaded Pinion Gear 15T X 12mm For R40 RC Spare Parts

Hpi 76970 Threaded Pinion Gear 20tx16mm - Red R40 2speed New In Package

Apex RC Products 19 & 20T Mod 1 M1 5mm 1/8 Scale Pinion Gear Set #9734

RC HPI R40 Nitro 2 Speed 19 Tooth 16 mm Pinion Gear Aluminum Purple (1) 76969