The TT2021B alloy front knuckle arm is an aftermarket steering hub intended for the Tamiya TT02 platform. It replaces the stock plastic knuckle with a metal unit that integrates a ball bearing at the steering pivot. The item ships as a 1pr set and is aimed at hobbyists performing tuning or maintenance.
When installing, keep or reuse the original nylon component as noted in the product instructions. Check steering linkage alignment and confirm bearing orientation so the pivot turns freely with no binding. Reuse the original TT02 hardware and follow recommended torque settings for the assembly.
Functionally the alloy knuckle increases stiffness relative to a standard nylon part and locates a bearing at the pivot to cut friction and wear. Users should expect a change in steering responsiveness and improved longevity when paired with correct setup and upkeep; adjust handling progressively when tuning.
Fit this alloy knuckle to firm the front end and reduce pivot drag, making sure to preserve the specified original nylon parts for correct fitment.
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