The Tamiya 22039 - TA08 Lightweight Front One-Way Set (37T) is a performance-oriented replacement for the front gear differential on TA08 4WD cars. It frees the front wheels during deceleration and couples them under power, giving cleaner weight transfer and improved speed through medium to fast corners.
In contrast to a standard diff or spool, the one-way reduces braking on the front axle so the car preserves corner speed through sweeping turns. Tracks with frequent hard braking are not the ideal application. Use moderate-power motors to maintain predictable handling when braking is light.
Fitting this one-way means the drivetrain stops applying braking forces to the front wheels, delivering snappier acceleration and improved line holding in fast sections. The reduced mass of the pulley also improves throttle response.
This unit is compatible with TA08 PRO builds and also fits TA07 and TRF420 chassis variants, offering flexibility across several Tamiya touring platforms.
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