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UMI adjustable rear upper control arms for 1971–1975 GM H‑Body let you fine‑tune pinion angle to reduce wheel hop and improve 60‑foot times. Built from 1.250" x 0.120" DOM tubing with CNC machining and 4140 chromoly tube adaptors, they use Teflon‑lined chromoly self‑lubricating spherical rod ends, CNC aluminum step bushings and full TIG welds. Install is bolt‑on with OEM hardware for a solid, adjustable upgrade.
UMI Performance 71-75 GM H-Body Adjustable Upper Control Arms- Rod Ends
