The XRAY 385701 kit contains four composite pinions sized 13T, 14T, 15T and 16T to help dial in acceleration and gear ratio for 1/10 scale vehicles. The pinions are molded for consistent tooth profile and the set includes a setscrew for secure mounting on the motor shaft.
Composite pinions cut down on rotating weight which improves throttle response and acceleration. They are also less likely to wear the spur gear teeth compared to steel pinions, extending the life of your drivetrain components and reducing long term maintenance.
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