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UMI's on-car adjustable Ultimate upper control arms for 1968–1972 GM A-body applications provide precise pinion angle tuning and race-capable strength. Constructed with 4140 chromoly components, CNC-machined mounting plates and a heat-treated chromoly solid adjuster, they allow on-car length changes to improve traction and reduce wheel hop. Teflon-lined spherical rod ends ensure bind-free operation for street or track use.
UMI Performance 68-72 GM A-Body Adjustable Upper Control Arms - Ultimate Arms
