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The UMI boxed lower and on-car adjustable upper control arm kit for 1978–1996 GM B-body replaces weak stock arms with boxed lowers and adjustable uppers for improved strength and rear-end tuning. Lowers include greaseable polyurethane bushings and reinforced sway bar holes; uppers use right- and left-hand threads, 4140 Chrome Moly adjusters and QA1 Teflon-lined spherical rod ends to help eliminate rear-end bind and simplify pinion angle adjustments.
UMI Performance 78-96 GM B-Body Boxed Lower Control Arm & Adjustable Upper Control Arm Kit
