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UMI's Ultimate adjustable rear upper control arms for 1964–1967 GM A-body vehicles deliver race-capable adjustability and strength. The design uses 4140 chromoly threaded tube adapters, a heat-treated chromoly adjuster and QA1 Teflon-lined spherical rod ends for bind-free movement. On-car adjustability simplifies pinion angle tuning to improve traction and reduce wheel hop, while CNC machining and durable powder coat ensure long service life.
UMI Performance 64-67 GM A-Body Adjustable Upper Control Arms - Ultimate Arms
