Tamiya WR02C CNC Aluminium Rear Knuckle Arm Precision Upgrade - WRC2022 by GPM  [WRC2022]

Precision aluminium rear knuckle for WR02C applications

This CNC-style aluminium rear knuckle arm is supplied as an aftermarket replacement designed to enhance rear spindle support on the Tamiya Honda City Turbo WR02C platform. Delivered as a 1pr set, the component increases structural stiffness compared with stock polymer parts and is intended for hobbyist performance upgrades and sustained track use.

Installation is conducted as a direct swap: remove the original knuckle, transfer bearings, bushings or seals as required, and secure the aluminium arm into the original mounting points. Use existing hardware when serviceable and torque fasteners to recommended values to maintain correct geometry and bearing preload.

From an engineering perspective, the aluminium arm raises local bending stiffness and reduces deformation under load, which improves rear axle feedback and reduces progressive flex during cornering. Tuners should verify toe settings and damper tuning after fitment to integrate the increased stiffness into an overall setup strategy.

A precision aluminium replacement for tuners focused on chassis rigidity and reproducible rear steering feedback; designed for direct mounting to WR02C locations and straightforward integration into setup work.