The Detroit Speed A-Body splined sway bar kit is tuned to provide the ultimate in performance, ride, and handling for your A-Body. It uses a 1-1/2" OD hollow 4130 alloy heat-treated splined sway bar that mounts in black hardcoated 6061-T6 billet aluminum pillow blocks with Delrin™ bushings. The sway bar arms are 3/4" thick solid steel to minimize deflection and come in a black powdercoat finish. The kit includes a low-friction ball style end-link system. The bar and arms are specifically designed for the A-Body chassis for performance, fitment, and clearance. This sway bar kit is a direct bolt-on for 1968-72 A-Bodies; on 1964-66 A-Bodies the existing sway bar mounting holes need to be drilled and tapped up to 3/8".