APR Tuned Stainless Steel Cat and Downpipe Replacement System Audi S4 B5 2.7T 6spd 00-02

APR's S4 Cat and Downpipe replaces the the exhaust from the turbochargers to behind the lower factory catalytic converters. The system removes the factory pre-cats right off of the turbocharger and includes six separate components. Included are the two pipes off of each turbocharger, a set of pipes with catalytic converters, and a set of test pipes without cats. With TIG welding, fully stainless construction, and CNC'ed hangers, you will not find a higher quality system on the market.

Note: Picture is for representation only. Actual product may vary.