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UMI boxed rear lower control arms for 1978–1988 GM G‑Body vehicles are direct bolt‑on upgrades that reduce wheel hop and improve cornering consistency. Built with 0.120" wall rectangular mild steel tubing, CNC‑machined bushing holders, MIG‑welded end caps and greaseable polyurethane bushings, they include reinforced sway bar provisions for stock or aftermarket bars and install in about an hour using OEM hardware with included instructions.
UMI Performance 78-88 GM G-Body Boxed Lower Control Arms
