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UMI's adjustable upper and lower rear control arm kit for 1964–1967 GM A‑Body improves traction and handling by replacing deflecting stamped arms with tubular units and high‑quality polyurethane bushings. Built from 1.625" x 0.120" DOM tubing with CNC machining, TIG and MIG welds, the kit includes on‑car greaseable bushings with fittings and installs in about two hours using OEM hardware, reducing wheel hop while remaining compatible with stock and aftermarket sway bars.
UMI Performance 64-67 GM A-Body Adjustable Upper & Lower Control Arm Kit
