HPI Spur Gear (48T)

are available in 70 and 78 tooth options. The 70 is recommended for stock and spec class applications as it will provide higher top speed, while the 78 will provide better bottom ...

standard 32 pitch) spur gear designed for use with the D817 family of vehicles. Use only in conjunction with HB Racing Mod 0.8 clutch bells (HB204044 & HB204045). Provides smooth transmission operation, ...

Differential Set. This package includes all the components needed to build one center differential. This lightweight diff includes a lightweight machined 48 tooth spur gear, lightweight outdrives and aluminum cross pins. This ...