This 55-tooth plastic spur, sold under part number RC18-031A, is offered as a replacement for the Team Associated RC18T gearbox. It is intended to restore correct tooth engagement when the original spur shows wear or produces drivetrain noise.
Installation follows common 1/18 scale touring truck practice: remove the gearbox cover, inspect pinion and bearings for signs of wear, fit the spur ensuring clean mesh with the motor pinion, and confirm the drivetrain turns freely before sealing the case. As a plastic component, check mesh and backlash during the first few laps and re-inspect as part of routine maintenance.
The 55T count changes the final drive ratio relative to other sizes, so expect differences in acceleration response and top speed. Use this part as a maintenance replacement or to make small incremental gearing changes while refining handling and motor load for track conditions.
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