This is an optional HPI 18 Tooth Heavy Duty Pinion Gear, and is intended for use with HPI Baja 5B, 5T, and 5SC 1/5 scale vehicles. Baja owners, your gearing options are here! This 18 Tooth Heavy Duty Pinion Gear gives the Baja 5B more top speed than the stock gearing. Precision machined from high carbon steel for a smoother finish to the teeth and more precise roundness, this gear has less friction for quieter running, increased efficiency and longer life than the stock gear. Also included is a machined aluminum Pinion Gear Heat Sink that helps cool the gear and clutch for longer spur gear life. Mounting hardware, heat sink and instructions are included.
Other Available Heavy Duty Pinion Gears:
- HPI86496: 16 tooth pinion gear
- HPI86497: 17 tooth pinion gear