Kyosho Motorcycle Main Gear KM155 Aluminium Upgrade by GPM  [KM155]

Durable aluminium main gear for Kyosho models

This aftermarket aluminium main gear serves as an RC-scale replacement for Kyosho motorcycle platforms and is supplied as 1 pcs. It is intended for use in compact motorcycle drivetrains where the main or spur gear needs service or an upgrade.

Install this part to restore damaged teeth, maintain correct mesh, or alter gearing for tuning. The aluminium construction gives a stable tooth profile and improved wear resistance over typical plastic gears, while remaining tailored for model transmissions.

Fitment notes: ensure correct gear mesh and axial alignment with the motor pinion and gearbox output, check shaft fit and fasten with the original retaining hardware, and rotate the drivetrain by hand before powering the model to confirm smooth engagement. Refer to your Kyosho model manual for bearing and mounting guidance.