Tamiya TT-01d Rear Upper Arm Alloy Upgrade TT057D by GPM  [TT057D]

Rear upper arm for TT-01d touring chassis

This alloy rear upper arm is an aftermarket replacement intended for use with the Tamiya TT-01d chassis (TT057D). It is supplied as a metal option to replace the factory arm and improve consistency in rear suspension geometry.

Located at the rear upper link position, the part helps set camber and roll-center behaviour. During fitment, check that the mounting holes and pivot interfaces match your TT-01d layout and confirm ball-end spacing before final assembly. Use the chassis mounting hardware unless your build notes call for alternatives.

For setup work this alloy arm provides a stable reference when adjusting shocks, roll stiffness, toe or camber. Keep clear setup notes when you swap arms and inspect attachment points regularly to ensure secure fastening during normal maintenance.