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

Counter gear for FF-03 chassis

This 20T counter gear is an RC-scale replacement part intended for use with the TAMIYA FF-03 chassis and related gearbox assemblies. It serves as the counter gear (secondary gear) that meshes with the spur and pinion to establish drive ratio and transfer power from the motor through the gearbox.

Compatibility is limited to FF-03 type gear trains and related assemblies that accept a 20-tooth counter gear; verify the original part profile before replacing. As a spare hop-up, the gear is useful when restoring worn teeth or when fine-tuning gear ratios for different track conditions.

Installation requires disassembly of the gearbox and basic hobby-level mechanical steps: remove the gearbox cover, extract the existing counter gear, check associated bearings and shafts for wear, fit the replacement gear ensuring correct backlash and tooth mesh, and reassemble while confirming smooth rotation. Routine checks after a short test run are recommended to confirm proper engagement and to avoid premature wear.