Kyosho Motor Cycle Aluminium Gear Box upgrade for drivetrain tuning - KM012N by GPM  [KM012N]

Aluminium gearbox for Kyosho motorcycles

This aluminium gearbox is an RC-scale replacement hop-up made for Kyosho motorcycle platforms where modified gear ratios are fitted. The design delivers a stiff, compact housing that secures spur and pinion interaction while keeping overall weight down to help handling and balance during tuning changes.

The casing is shaped to sit in standard Kyosho motorcycle engine bays and works with the existing mount layout, so many tuning variants can be used without changing adjacent mounts. Aluminium improves thermal dispersion over typical plastic housings and lowers the chance of deformation under high-torque motors or aggressive gearing. Installation requires basic disassembly of the original gearbox area, alignment checks for pinion and spur, and mesh adjustments using shims or thin plates.

Fit this aluminium gearbox when changing gear ratios to maintain alignment and reduce flex; carefully set gear mesh at installation and re-tighten fasteners after running to preserve consistent operation.