Hartmann GT Downpipes and Cats for the Audi B5 S4 6-speed are a complete 57mm mandrel bent stainless steel downpipe replacement. The system includes six separate components, two pipes off of each turbocharger, a set of pipes with catalytic converters, and a set of test pipes without cats. Hartmann exhausts are fully made in the USA and have a lifetime warranty.
Fits Audi B5 S4 Sedan and Avant 6-speed.