TAMIYA TT01 Rear Upper Arm Heavy Duty Alloy TT057 by GPM  [TT057]

Heavy duty alloy upper arm for TT01

This alloy rear upper arm is an aftermarket replacement made by GPM for the TAMIYA TT01 chassis, supplied with shims, collars, E-clips and retaining pins. It is intended to replace the stock plastic arm and provides a stiffer mounting point for the rear hub on 1/10 touring cars.

Fitment details: the arm uses the included pin hardware so installation follows the TT01 rear hub and suspension geometry. During fitting, confirm pin alignment, check for any interference at the hub and link connections, and use the supplied shims to refine camber and lateral spacing if needed.

Tuning impact: the alloy arm reduces flex versus plastic originals, helping to hold camber and toe settings under load and improving consistency through cornering and acceleration. Collars and shims let you adjust pivot spacing and track to influence handling and tyre wear patterns.