This CNC-grade aluminium knuckle arm from 3Racing is supplied as model 416-18/LB and is intended as a high-value aftermarket replacement for the TAMIYA TRF 416 knuckle. The component retains OEM mounting locations and suspension geometry while providing a stiffer hub mounting interface for more repeatable steering feedback.
For competitive setup work the knuckle performs two core functions: it secures the wheel hub and steering linkages to a rigid surface and it stabilises suspension geometry during iterative tuning. When installed on a TRF 416 chassis, the part allows finer evaluation of camber, toe and damper changes because mounting points are unchanged and material stiffness is consistent.
Installation guidance: fit as a direct swap into the TRF 416 using the chassis' existing fastener points. Adhere to published torque values and assembly order, verify linkage geometry and wheel hex concentricity, and run controlled test runs to confirm expected handling adjustments.