Kyosho Motor Cycle Alloy Gear Box With Screws (Big Teeth Gear Design) by GPM KM012A  [KM012A]

GPM KM012A motorcycle gearbox assembly

The GPM KM012A is an aftermarket alloy gearbox assembly sold as a 1pc set that includes the mounting screws and a big-teeth gear layout, intended for Kyosho motorcycle-scale RC models. It is presented as a direct replacement part to address wear on plastic housings or to offer a stiffer metal alternative for tuning chassis drivetrain feel.

Constructed in aluminum alloy, this gearbox is designed to change the engagement characteristics through its larger tooth profile, which alters mesh behavior compared to standard small-teeth spur options. The part is intended for use in hobby-scale electric motorcycle models where chassis tuning and drivetrain reliability are priorities.

Installation is straightforward for experienced model technicians: remove the original gearbox, orient the alloy housing for correct gear mesh, and secure with the supplied screws. Check alignment and clearances before finalising assembly to avoid premature wear.

As an aluminium replacement gearbox, the KM012A suits builders focusing on drivetrain stability and tuning changes; verify fitment against your Kyosho motorcycle model before installation.