Yokomo YOKPG6440 64 Pitch 40T Pinion Gear  [YOKPG6440]

Replacement Pinion — 64 Pitch 40T

This R/C pinion is listed under the Yokomo YOKPG6440 code and serves as a direct replacement or spare for setups that use 64 pitch gears. It is identified solely by its pitch and tooth count and functions as a basic drive component in electric hobby models employing 64 pitch gear trains.

Fitment hinges on matching your motor shaft diameter and the pitch of the spur gear, so check both before installing. The part is offered as the gear element only and is suitable where 64 pitch pinions with 40 teeth are required.

Fitting is simple in most rigs: access the motor shaft, mount the pinion, adjust the mesh so teeth engage without binding or excessive play, then lock the pinion with the motor's existing retention method. Avoid forcing the gear onto a shaft of the wrong size and verify mesh under light throttle before normal operation.

Tuning note: swapping tooth counts changes the overall ratio — 40 teeth at 64 pitch is a middle-ground choice for fine adjustments between acceleration and top speed. Inspect mesh and wear periodically to preserve drivetrain life.