This 55T titanium main gear is an aftermarket spur made to fit Team Associated RC18T models, supplied as 1 pcs. It serves as a direct-replacement scale accessory for radio control use and mounts as the primary spur in the RC18T drivetrain.
The titanium construction provides a compromise between corrosion resistance and wear performance relative to standard steel gears, which can help preserve consistent tooth engagement during extended sessions. The part is intended to sit on the chassis spur mount and mesh with the motor pinion, so precise meshing and alignment are required.
Fitment notes: remove the original spur and ensure the spline and mounting faces are free from grit, slide the spur onto the shaft and set pinion-to-spur mesh with minimal backlash and no binding. Secure with the original fastener once mesh is correct and turn the drivetrain to confirm smooth operation. Check for contact with gearbox components and re-shim if necessary.
Setup impact: fitting a titanium main spur is mainly a durability and mesh-stability change rather than a gearing performance shift. After installing, re-check gear mesh and drivetrain runout and consider how pinion selection affects acceleration and top speed for your circuit.
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