Tamiya TB-04 Precision Aluminium Rear Knuckle TB4022 by GPM  [TB4022]

Precision aluminium rear knuckle for TB04

This aluminium rear knuckle arm is supplied as 1 pr and is intended as a direct replacement for the plastic rear knuckle on compatible Tamiya TB04 touring car rear assemblies. It is machined to provide consistent geometry under load.

Engineering notes: manufactured from aluminium to increase stiffness and surface durability compared with injection molded plastic. The increased rigidity helps maintain suspension alignment and reduces dimensional change during repeated track use, supporting predictable rear handling.

Fitment and service: confirm your TB-04 variant uses the same knuckle geometry before installation. Service steps include hub removal, bearing transfer or replacement, and reassembly with original fasteners. Ensure correct thread engagement and set bearing preload to manufacturer recommendations.

Setup guidance: aluminium knuckles alter torsional characteristics which can affect rear traction and steering response; implement stepwise toe or camber changes and monitor hex screw torque to prevent bearing distortion or binding.