The Factory Pro O-AP0002 is an aftermarket 33-tooth spur designed for Tamiya M-series small touring cars. Its 48Pitch tooth form pairs with standard 48Pitch pinions to alter final drive ratio and refine mesh characteristics inside compact gearboxes.
Fitment covers the M05 line and compatible M06/M07/M08 variants that use 48Pitch gearing; always check gearbox clearance and the current pinion tooth count prior to installation. This part is intended as a single-piece spur replacement rather than a rebuildable assembly.
Fitting advice: mount the spur on the gearbox hub, set backlash and axial play, and confirm smooth meshing across steering and suspension movement. Perform short low-load runs to reveal any rough engagement or uneven wear and adjust mesh before extended use.
Tuning guidance: a 33T spur shifts the gear ratio relative to other spur sizes, influencing acceleration and top speed balance. Use spur swaps together with pinion selections and motor/ESC tuning to achieve desired drive characteristics for circuit or club driving.
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