#106631 - THREADED PINION 22Tx12mm (1M) (ORANGE) NITRO 3 Genuine HPI quality spare part for easy maintenance and repairs. See below for kit reference.
#72036 ALUMINUM HEX HUB CLAMP TYPE (6mm/4pcs)
#A880 CLUTCH BELL FOR NITRO RS4 2 SPEED
#A447 SPUR GEAR 41 TOOTH (1M) (ADAPTER TYPE)