BMR 68-72 A-Body Upper Control Arms On-Car Adj. (Polyurethane) - Black HammertoneLaunching harder, reducing wheel hop, and adding cornering consistency to your 1968 1974 GM A body is easy with adjustable upper control arms from BMR's suspension. The stock stamped steel control arms with soft rubber bushings deflect under load and absorb power instead of transferring it to the tires. BMRs polyurethane, on car adjustable tubular upper control arm for A bodies (UTCA046) are manufactured from heavy duty 1 1 4 inch DOM steel tube. The