QA1 has Panhard Bars that accommodate a variety of GM vehicles. The improved design resists unwanted flex and twisting, keeping the axle properly located under the chassis for improved cornering and drivability under all conditions. Adjustable Panhard Bars are needed for lowered cars to maintain proper axle alignment. Truck and SUV Panhard Bars allow for maximum rear suspension travel without bushing bind for a superior ride. Panhard Bards include our fluted, greaseable graphite/polyurethane bushings for a long, trouble free life. These Panhard Bars also complement our Lower Trailing Arms.