This UMI Performance complete kit for 1968–1972 GM A-body bundles double-adjustable lower control arms with spherical rod ends (Item #4027) and double-adjustable upper "Ultimate Arms" (Item #4017). Packaged as a matched set, it provides adjustable upper and lower links for thorough rear suspension tuning where double adjustability is required for alignment and positioning on A-body rear assemblies.
UMI Performance 68-72 GM A-Body Double Adjustable Upper & Lower Rear Control Arms