ST Suspension 90603 Coilover Kit for Audi A4 (8D/B5) Quattro Sedan, Wagon and S4 (8D/B5) Sedan, (Set of 4) Matched damper and spring rates Lowers the vehicle by 1.0 inch - 2.5 inches; height adjustable in all four corners Corrosion resistant zinc plated threaded strut housing Integrated rising rate elastomeric bump stops