3RACING SAK-U122B Sakura Ultimate 40T Racing Spare  [SAK-U122B]

3RACING Sakura Ultimate 40T Gear Differential Plastic Replacement - SAK-U122B
Price:
USD$3.80
Brand:
3Racing
Model:
SAK-U122B
Condition:
Brand New
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Racing oriented replacement diff for Sakura Ultimate

The 3RACING SAK-U122B is a purpose-made 40T plastic differential intended for competitive Sakura Ultimate cars where predictable torque transfer is required. Its lightweight gearset aids quick response while delivering repeatable performance under typical race conditions. Technically straightforward to fit, it supports common tuning practices such as shim adjustments and differential oil selection to tune handling balance for specific track surfaces.

How should I shim the SAK-U122B for race use?

Start with factory shims and adjust by small increments to eliminate lateral play while avoiding excessive preload; correct shimming preserves gear alignment and reduces wear.

Which diff fluid works best with plastic gears?

Use oils designed for plastic gear differentials and avoid abrasive additives; choose viscosity to match desired slip and traction for the chosen track surface.

Can this diff be used as a tuning upgrade?

The SAK-U122B is primarily a replacement part; while it can suit lighter race setups, teams seeking extreme durability or reduced backlash may prefer metal upgrade options for aggressive tuning.