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UMI tubular upper control arms with Roto-Joint technology for 1978–1988 G-Body applications use a greaseable Delrin-lined pivot ball to allow 28 degrees of movement for bind-free articulation and quiet ride quality. Constructed from 1.500" x 0.120" DOM tubing with .250" thick CNC-machined mounting plates, they ship fully assembled with spherical Roto-Joints installed and use OEM hardware for direct bolt-on replacement.
UMI Performance 78-88 G-Body Non Adjustable Upper Control Arms- Roto-Joint
