RC HPI R40 Nitro 2 Speed 46 Tooth Spur Gear Plastic Black (1) 76956

HPI 2-Speed Second Gear Set (37/20T)

HPI Threaded Pinion Gear 25T x16mm (0.8M / 2nd / 2 Speed) 77020 RS4,R40

HPI Racing 77035 Spur Gear 60 Tooth (0.8M / 1st Gear / 2-Speed) ~ R40

RC HPI R40 Nitro 2 Speed 44 Tooth Spur Gear Plastic Black (1) 76954

UPGRADE FOR HPI A444 BUT HAS 40 TOOTH SPUR GEAR SUPER NITRO RS4

(HPI 77035) R40 Spur Gear 60 Tooth (0.8M / 1st Gear / 2-Speed)

HPI 76937 Steel Spur Gear GEAR 47T 47 Tooth (1M) For HPI Savage X4.6 RC Parts