Kyosho Motorcycle Alloy Main Gear KM155 Replacement for Tuning by GPM  [KM155]

Alloy main gear suited to Kyosho bikes

This aftermarket alloy main gear is provided as an RC-scale spare for Kyosho motorcycle platforms, supplied as 1 pcs. It is intended for small motorcycle drivetrains where the main or spur gear requires replacement or an upgrade during servicing.

Fit this aluminium gear to replace worn teeth, preserve accurate gear mesh, or change drive ratios when tuning. Compared with standard plastic gears, the alloy main gear maintains consistent tooth geometry and offers better resistance to light wear while remaining designed for model transmissions.

Installation guidance: check gear mesh and axial position relative to the motor pinion and gearbox output, confirm proper shaft fit and secure using original retaining parts, then rotate the drivetrain by hand to confirm smooth engagement before applying power. Follow your Kyosho manual for bearing and mounting specifications.