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

TT-01d alloy rear upper link

This alloy rear upper arm is made as an aftermarket replacement for Tamiya TT-01d cars (TT057D). It replaces the stock rear upper link to give a firmer reference point for suspension adjustments without changing the chassis layout.

The arm fits the upper rear link location and influences camber and roll-center behaviour. Before tightening, confirm hole alignment and that ball-end or pivot spacing matches your TT-01d. Fit using the vehicle's original mounting hardware unless you have a planned upgrade that requires different fasteners.

Use this alloy arm when testing shock rates or fiddling with roll stiffness to get repeatable handling data. Keep a setup sheet when you swap arms and check fasteners as part of routine upkeep to avoid loosening on track sessions.