The Tamiya 51568 Gear Differential Set is a key upgrade for the TRF419 4WD on-road racing chassis. It lets drivers experiment with different oil viscosities to alter the differential action, helping you dial in balance and traction across varying track conditions. That tuning range makes it a practical choice for racers who want consistent lap times.
For experienced racers aiming to improve cornering and adjust front-to-rear feel, the Tamiya 51568 Gear Differential Set lets you carry multiple pre-set units so you can swap setups quickly between sessions.
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