This Factory Pro over ratio spur is a direct replacement style gear intended to help RC drivers fine tune final drive ratios on mini touring and compact chassis. It fits 48 pitch systems and uses a 33T tooth count to shift acceleration and top speed without swapping wheels or motor units.
The listed compatibility covers T.O.P. FD Mini and Tamiya M Series models including M05, M06, M07 and M08. Check that your gearbox supports 48 pitch spur gears and the 33T tooth count before purchasing. Reference the part number O-AP0001 when confirming fit.
Installation advice: set pinion-to-spur mesh with a small, even clearance, inspect for gearbox housing or servo interference, and fasten the spur using your chassis standard practice. Small over-ratio steps change motor load and handling, so bench test before extended running.
Choose this spur when you want a modest over-ratio change while keeping a 48 pitch drivetrain layout; always verify mesh and clearances and perform controlled tests to assess handling and motor temperature.
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