This Factory Pro O-AP0002 spur gear is an RC-scale replacement part intended for Tamiya M-series small touring chassis. The 33-tooth 48Pitch profile is used where standard 48-pitch pinions and spur gears are fitted, and it serves the specific role of altering final drive ratio and mesh characteristics within compact gearboxes.
Fit and compatibility focus on the M05 family and related M06/M07/M08 variants that share the 48Pitch gear standard; check the gearbox clearance and existing pinion tooth count before installing. This component should be treated as a direct gear replacement, not a serviceable subassembly.
Installation notes: position the spur on the gearbox hub, confirm backlash and axial play, and verify smooth engagement across the full steering/suspension travel for your chassis. Use gradual trial runs to detect binding or uneven wear in the geartrain, and correct mesh before extended running.
Tuning role: changing to a 33T spur modifies overall gear ratio compared with smaller or larger spurs, affecting acceleration and top speed balance. Use gear changes as part of an incremental tuning plan alongside pinion swaps and motor/ESC setup to reach the desired drive characteristics for track or club runs.
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