TAMIYA 20T FF-03 Counter Gear Service Part FF03-03 by 3Racing  [FF03-03]

Service counter gear for FF-03 drivetrains

This 20-tooth counter gear is intended as a replacement for use in TAMIYA FF-03 chassis gearboxes. It serves as the secondary gear that mates with the spur and pinion to establish drive ratio and transfer motor output through the gearbox.

Compatibility is restricted to FF-03 type gear trains that accept a 20T counter gear; always compare the new part to the original profile before fitting. Hobbyists use this gear when refreshing worn teeth or when fine-tuning gearing for different track layouts and conditions.

Installation involves basic gearbox work: remove the case, extract the old counter gear, inspect bearings and shafts, fit the new gear while setting correct backlash and tooth mesh, and reassemble. Perform a short test run and recheck engagement to ensure smooth operation and to prevent premature wear.