Kyosho Motorcycle Low-Friction Delrin Main Gear DKM155 by GPM  [DKM155]

Low-wear Delrin main gear for Kyosho motorcycles

This Delrin main gear is an aftermarket replacement engineered for Kyosho motorcycle models. Sold as a single piece, it sits where the main gear interfaces with the pinion and spur to transmit motor torque. Delrin gives a low-friction contact surface and good wear resistance for plastic gear meshes commonly used in electric motorcycle assemblies.

Fitting is simple for anyone used to small motorcycle gearboxes: remove the gearbox cover, take out the worn main gear, and fit the replacement using the original bearings and fixings. On reassembly, check axial clearance and set gear mesh correctly to avoid excessive backlash or binding; a small visible gap is typical with Delrin meshes.

Practical maintenance: Delrin teeth can be quieter than harder materials but inspect for wear if you run high rpm or change gearing. Apply a light plastic-compatible grease sparingly only where needed, and confirm pinion alignment and bearing condition to maintain consistent mesh.