Kyosho Motorcycle Middle Gear Delrin DKM153 for tuning by GPM  [DKM153]

Delrin middle gear summary

This Delrin middle gear is an aftermarket replacement built for Kyosho motorcycle transmissions, chosen where a lower-friction plastic gear reduces contact noise and stress on metal mates. It replaces the OEM middle gear in the transmission stack to improve mesh smoothness.

Installation is straightforward for those familiar with small RC gearboxes: open the gearbox to access the centre gear, swap in the Delrin unit, align against the pinion and spur, and check backlash while rotating the drivetrain before reassembly. Use thread lock only where required and avoid over-tightening fasteners that could distort the plastic gear.

For ongoing maintenance and tuning the Delrin middle gear reduces wear on adjacent metal gears and gives a quieter engagement. Regular inspection of gear teeth and bearing seating, plus light lubrication at the mesh, will extend the gear's service life and keep power delivery consistent.