ST Suspension 52490 Front and Rear Anti-Sway Bar Set for Chevrolet HHR No component has as drastic effect on your body roll as the anti-sway bars without adversely affecting your ride quality ST anti-sway bar will result in a drastic reduction in the boat-like feel that many vehicles have with the factory or even mildly tuned suspension By increasing the rate of the front, rear or both bars over the factory units, your body roll will be reduced giving you more confidence on long sweeping corners, on and off ramps, as well as in emergency maneuvers Designed and produced in-house at the California facility and are constructed from high quality steel for precision performance, and powder coated for durability All necessary high grade mounting hardware and bushings, as well as full instructions are included in each and every kit for simple installation