For those that track their A4/S4 often or want a much more aggressive feel when attacking a canyon road, Hotchkis Sport Suspension offers the Extreme Sport Sway Bar Set. With the rear adjustable, for fine tuning, turn-in is very crisp while the rear will rotate around tighter radius corners. This set uses a 35mm, tubular front bar and a 22mm, tubular, two-position rear bar. Included are replacement polyurethane bushings front and rear, bushing brackets front and rear along with 90-degree grease fittings front and rear. To strengthen the rear sub-frame area, Hotchkis developed a billet aluminum reinforcement bracket system which bolts easily from the sub-frame to a hard point on the chassis. All necessary hardware is included in the reinforcement kit.