APR CD100002 Downpipes and Cats for Audi B5 S4 M/T

The APR CD100002 B5 S4 Downpipes and Cats replace the the exhaust from the turbochargers to behind the lower factory catalytic converters. The system removes the factory Audi pre-cats right off of the turbocharger and includes six separate components. Included with the APR CD100002 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.

Fits manual transmission equipped cars only, will not fit tiptronic transmission.