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UMI's Roto-Joint adjustable rear upper control arms for 1973–1977 A-Body and 1978–1988 G-Body cars provide on-car pinion angle adjustment and strong, durable construction for street or pro-touring use. The greaseable spherical Roto-Joint and CNC laser-cut 1/4" mounting pads combine with a CrMo adjuster for easy adjustment without unbolting. These heavy-duty arms are TIG/MIG welded and install in about 1–2 hours.
UMI Performance 73-77 GM A-Body 78-88 G-Body Rear Upper Control Arms Adjustable
