This hardened 17T steel pinion is offered as an aftermarket replacement for Baja 5b, Baja 5b Ss and Baja 5T vehicles, focused on stable tooth engagement and everyday durability in RC drivetrains.
Fit and pairing: intended to be used with the SBJ057T spur gear to secure correct mesh and help limit uneven wear. Always check motor shaft fit, set screw seating, and perform a single-turn rotation test to confirm smooth engagement without binding.
Tuning impact: fitting a 17T pinion modifies the gear ratio to favour acceleration over top speed. Make incremental changes and watch motor temperature and ESC load to maintain component safety.
Service tips: inspect pinion and spur for damage after use, remove debris from the gear teeth, and ensure bearings and motor mounts are tight to preserve consistent mesh and quieter operation.
A basic steel pinion for hobbyists adjusting gear ratios on specified Baja platforms; pair with the recommended spur and verify mesh during fitting.
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