KM012A Aluminium Motorcycle Gearbox Housing KM012A by GPM  [KM012A]

Precision KM012A gearbox assembly for Kyosho motorcycle chassis

The KM012A is a CNC-friendly alloy gearbox housing offered as a single-piece replacement kit complete with mounting screws. It employs a large-tooth spur layout to modify engagement geometry and increase overall housing stiffness relative to OEM plastic units.

Constructed from aluminium alloy, the housing alters load distribution and gear contact patterns through its enlarged tooth profile, which can reduce compliance in tuned drivetrains and improve repeatable mesh under varying torque conditions.

Installation requires removal of the original gearbox, correct orientation of the alloy housing to attain the intended mesh setting, and tightening of the supplied screws to the recommended torque. Validate shaft alignment and freeplay by rotating the drivetrain before powered testing to prevent premature component wear.

For precision builders seeking a stiffer aluminium gearbox for drivetrain tuning, the KM012A provides consistent mesh characteristics; confirm dimensional fitment with your Kyosho motorcycle prior to final assembly.