TRAXXAS 1/10 Rustler VXL Alloy Rear Upper Arm by GPM RUS057  [RUS057]

Alloy rear upper arm for Rustler VXL

This alloy rear upper arm is an aftermarket replacement part produced by GPM for the TRAXXAS 1/10 Rustler VXL platform, supplied as the RUS057 item. It is intended as a direct-fit rear upper link to restore or upgrade the rear suspension connection points and maintain alignment under load.

Fitment and basic installation follow the chassis mounting points on the Rustler VXL rear suspension, using existing hardware and pivot locations. Verify ball studs and pin locations for correct articulation, and check for interference with the shock towers and rear hub assembly during initial fit-up.

In tuning terms the rear upper arm affects roll center and rear toe behavior under compression and rebound. Swapping to a stiffer alloy arm can reduce flex at the suspension pickup, yielding more consistent rear geometry during aggressive cornering or high-speed runs. Use small incremental changes when adjusting other rear link lengths or shock rates to maintain predictable handling.

Use this arm where you need a durable aftermarket rear upper arm to keep rear suspension geometry consistent across track or bashing conditions.