The SuperSteer SS450 Rear Trac Bar is compatible with Ford E-450 chassis that has a OEM rear sway bar. The SuperSteer Rear Trac Bar is designed to reduce rear axle side-to-side play, which prevents "Tail Wagging The Dog" motion and greatly improves stability in turns and reduces right-left corrective steering. The SuperSteer Rear Trac Bar attaches to the vehicle frame on one end and rear axle on the other. The SuperSteer Rear Trac Bar is made out of heavy gauge steel, powder coated blue, and contains polyurethane bushings and installs using existing mounting points.