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The UMI on-car adjustable rear upper control arm for 1965–1966 GM B-Body is a direct replacement that helps minimize wheel hop and improve cornering by allowing easy pinion angle adjustments while mounted. It includes grease-able polyurethane bushings, TIG-welded construction and a 4140 heat-treated Chromoly adjuster. Compatible with 3-link and 4-link rear setups. Sold individually; verify whether one or two arms are required.
UMI Performance 65-66 GM B-Body Adjustable Upper Control/Trailing Arm
