The JR-TT2B01-BK front knuckle arm set is an aluminium steering upgrade for TAMIYA TT-02B and DF-02 chassis configurations. The black-finished machined parts replace stock plastic knuckles to stiffen the steering pivot points and improve the consistency of wheel alignment under load.
Installation requires routine front-suspension disassembly: remove the factory knuckles, transfer hub pins, e-clips, bearings and shims as applicable, and fit the aluminium arms. Verify tie-rod geometry and ensure the steering linkage clears the new arms through full suspension travel. Typical hex drivers are all that are needed.
Aluminium knuckles reduce unwanted flex, delivering more immediate steering feedback and predictable geometry during tuning sessions. After initial running, inspect mounting interfaces and fasteners and re-torque hardware to confirm secure fitment.