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The UMI Performance on-car adjustable lower control arms for 1982–2002 F-Body applications use patented Roto-Joint technology to eliminate suspension bind and cut wheel hop. A hard‑chrome 4140 chromoly spherical ball spins in a CNC‑machined Delrin race to provide 28° of movement. One end uses polyurethane chassis bushings while the greaseable, adjustable Roto‑Joints on the axle side are rebuildable for long life and better traction.
UMI Performance 82-02 F-Body On-car Adjustable Control Arms- Poly/Roto-Joint
