Tamiya 42185 TRF417 Gear Differential Unit - Track Tuning  [42185]

Tamiya 42185 - TRF417 Gear Differential Unit
Price:
NZD$92.06
Brand:
Tamiya
Model:
42185
Condition:
Brand New
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Dial In Your TRF Handling

The Tamiya 42185 - TRF417 Gear Differential Unit replaces the standard differential with a gear-type design that accepts various silicon oil weights. This lets you tune lock characteristics and deliver more consistent steering feel lap after lap.

Compatibility Notes

Built for use with TRF416, TRF416WE, TRF416X and TRF417 chassis, the unit is engineered to withstand frequent running. Proper installation and correct lubrication are key to getting the best life from the gears.

Tuning Tips for Different Tracks

Changing the silicon oil viscosity inside the diff adjusts how quickly the wheels lock together, affecting corner entry and mid-corner balance. Many drivers match this unit with Tamiya Item 53455 Silicon Damper Oil Hard Set (1000) for a stable baseline setup.

Can I use this in all TRF series cars?

It is compatible with TRF416, TRF416WE, TRF416X and TRF417 models, but always check gear mesh and mounting on your specific chassis variant.

How does changing oil affect handling?

Heavier silicon oil increases coupling between wheels for more traction and stability, while lighter oil gives freer differentiation and quicker turn-in.

Any setup pointers for first install?

Clean all mating surfaces, confirm gear alignment, fill with a test viscosity, then make small changes and record results to dial in the balance you prefer.

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