Tamiya 54424 Spool Conversion 3x3mm Bushings  [54424]

Firm Rear-End Feel with Tamiya 54424 Bushings

These compact 3x3mm bushings are made to replace diff balls and give models spool-like behaviour, improving straight-line drive while reducing wear on rotating parts. They also act as a cushion under impact to help protect gears and shafts.

Spool-Like Torque Delivery

Fitting the bushings disables the differential movement so both wheels turn together, which suits surfaces where you want consistent throttle response and traction.

Impact Protection via Controlled Slip

The design allows slight slipping when overloaded, behaving like a clutch to absorb shock and lower the risk of drivetrain failure after a hit.

Fits 3mm Ball Differentials

Tamiya 54424 is compatible with most setups that use 3mm diff balls, making it a useful part for racers and club drivers who service several cars.