The Hartmann B5 S4 GT catback system is a complete stainless steel, mandrel bent, dual 57mm to single 76mm cat-back exhaust with dual bevel-cut, round tips. The Hartmann B5 S4 GT exhaust has a deeper tone than stock and increases the loudness of the exhaust by about 20% to give a very nice sound and pleasant driving experience at all RPM's. Hartmann exhausts are fully made in the USA and have a lifetime warranty.
Fits Audi B5 S4 Sedan and B5 S4 Avant