Tamiya 54215 - Spur Gear Spacer for F104/TRF101, Ratio Tuning Accessory  [54215]

Optimize F104 and TRF101 drivetrains with a compact spacer

The Tamiya 54215 Spur Gear Spacer is a flexible upgrade made to broaden the setup options for F104 and TRF101 chassis. It lets hobbyists fit touring car spur gears onto compatible F103 and F104 models, offering a straightforward way to alter gear ratios for different track conditions or driving styles.

Expand your gear ratio choices for precise tuning

Fitting the Tamiya spur gear spacer opens up a wider selection of spur gears and ratios to try. That flexibility helps racers and club drivers tune acceleration, top speed and throttle response to match asphalt layouts or technical sections.

Enhance grip by enabling diff setup changes

Beyond gear ratio tuning, the spacer can create space to increase differential ball count when compatible parts are used, which may improve traction and stability. That adjustment is useful for drivers seeking sharper cornering control and consistent handling.