The Tamiya 54875 - TT-02 Oil Gear Differential Unit provides tunable internal damping for TT-02 chassis by using silicone oil to alter differential behaviour. It is a practical upgrade for fine-tuning steering balance and traction delivery.
Modifying the silicone oil viscosity changes the rate at which the diff gears rotate, which in turn affects turn-in, mid-corner balance and drive out of bends. Lighter oils suit loose or low-grip surfaces, while heavier fluids give steadier traction on tacky tracks.
The unit features a glass fiber-reinforced nylon gear case, gasket and four die-cast bevel gears for dependable operation. It is compatible with several TT-02 variants but requires the correct universal shaft assemblies to fit: Item 53792 for TT-02 and TT-02D, Item 53791 for TT-02B.
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