Upper Control Arms, DOM, On-car Adjustable, Poly BushingsLaunching harder, reducing wheel hop, and adding cornering consistency to your 1978 1987 GM G body is easy with adjustable upper control arms from BMR Suspension. The stock 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 G bodies (UTCA055) are manufactured from heavy duty 1 1 4 inch DOM steel tube. The center adjuster