Tamiya TB-04 Aluminium Rear Suspension Arm TB4056 by GPM  [TB4056]

Rear aluminium arm for TB-04 chassis

This aluminium rear suspension arm is an aftermarket replacement part for TB-04 touring cars, listed as TB4056. Supplied as 1pr, it replaces the stock plastic lower arm where a metal alternative is required for longevity or altered handling.

Installation is simple: remove the stock rear lower arm, check that the TB-04 mount holes and fasteners match, then fit the aluminium arm using existing screws and ball studs where they fit. After fitting, verify suspension articulation and perform a wheel alignment check.

Tactically, an aluminium arm raises stiffness at the mounting points versus plastic, which can tighten rear response and reduce flex. Use this component when you want a more consistent rear geometry under load and adjust dampers and toe to fine tune handling.