This replacement pinion is made for TRAXXAS TRX4 Trail Crawler platforms and TRX4-compatible drivetrains. The 2 pcs set mounts to the motor and transfers torque into the spur and gearbox, helping maintain consistent gear mesh during crawling and trail sections.
Forged from hardened steel #45, these pinions are intended for regular scale crawling stresses and retain the common 11T tooth count found on many TRX4 motors. The package also supplies a single 3x3 screw shaft for secure mounting to the motor shaft.
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