Sway bar, R, Audi A4 B5 Quattro 97-01, S4 00-02; Neuspeed sway bars give you the ultimate in handling with smooth mandrel bends, aerospace-quality steel and urethane bushings. Neuspeed sway bars reduce body roll during cornering without sacrificing ride comfort during straight-line cruising. 19mm 2-position adjustable rear bar. Includes bolt-in subframe reinforcement brackets (not shown in photo.) NOTE: Audi A4 Quattro and S4 rear suspension subframes should be inspected carefully prior to the installation of any rear anti-sway bar. If you find any fractures or cracks in the subframe, repair or replace the subframe prior to installing your new anti-sway bar.