TAMIYA TT01 Rear Upper Arm Precision Alloy TT057 by GPM  [TT057]

Precision alloy rear upper arm for TT01 applications

This alloy rear upper arm is an aftermarket replacement manufactured by GPM for the TAMIYA TT01 chassis, supplied complete with shims, collars, E-clips and retaining pins. It is engineered as a direct replacement for the factory plastic arm to provide a more rigid rear hub mounting point on 1/10 touring car platforms.

Assembly notes: the component uses the included pin retention hardware and installs into the TT01 rear hub and suspension arrangement without additional brackets. During assembly, verify pin seating, inspect clearances at the wheel hub and linkages, and use the supplied shims to fine-tune camber and lateral spacing where precision adjustments are required.

Performance intent: the aluminium alloy arm reduces component deformation under load, helping to stabilise rear suspension geometry and maintain camber and toe settings through dynamic conditions. Use the collars and shims to adjust pivot alignment and track width for optimal tyre wear and handling balance.