TRAXXAS Rustler VXL Rear Upper Arm - Alloy RUS057 by GPM  [RUS057]

Aftermarket alloy rear upper arm for precision rear geometry

This alloy rear upper arm is an aftermarket replacement part manufactured by GPM and supplied under item RUS057 for the TRAXXAS 1/10 Rustler VXL. It is designed as a direct-fit rear upper link to replace worn parts or upgrade the rear suspension pickup for more stable alignment under load.

Fitment follows the Rustler VXL rear chassis mounting points and typically uses the original hardware and pivot locations. During the first assembly verify ball stud and pin positions and check for contact with the shock tower or hub to ensure correct articulation.

From a tuning viewpoint the rear upper arm affects roll centre and rear toe during compression and rebound. Swapping to a firmer alloy arm reduces flex at the pickup, producing steadier rear geometry under aggressive cornering or fast straights. Make gradual adjustments when changing link lengths or shock settings to preserve balanced handling.

A solid choice where you want a reliable aftermarket rear upper arm that keeps suspension geometry consistent for spirited driving.