Yokomo SG-6491 Precision 64-Pitch 91T Spur Gear  [SG-6491]

64-pitch 91T Spur: precision gearing for smooth delivery

This 91-tooth spur is a precision option intended for 64-pitch RC drivetrains. The refined tooth profile aims to lower meshing losses and promote steady power transfer within model car geartrains.

Fit with a corresponding 64-pitch pinion to maintain correct engagement. When installing, verify the pinion-to-spur mesh, set suitable backlash, and inspect the contact across the tooth face to avoid uneven wear.

For tuning scenarios the 91T provides finer steps in final drive ratio compared to smaller spurs, so you can make modest adjustments to acceleration and top-end behaviour without altering other drivetrain components.