STM Audi RS3/TTRS Downpipe Spec-R If you have any questions

If you have any questions regarding your set-up

Since we are fabricating these in mass quantities anyhow

"The COBB catback exhaust for the WRX & STI does not deviate from the factory emissions equipment and conforms to the SAE dictated 95-decibel exhaust noise level limit enforced by California

These are built to order and generally ship in 8-12 business days

Includes two matching worm clamps

STM Audi RS3/TTRS Downpipe Spec-R If you have any questionsThe STM 2 Piece 3. 5" Downpipe is the perfect addition to your RS3 or TTRS! Beautifully crafted in the USA, this stainless steel downpipe features a billet v band flange to mate perfectly to your factory turbo, full 3. 5" construction then merged into two 2. 5" outlets to mate up to your stock or factory style cat back exhaust. Three oxygen sensor bungs are included for the factory front and rear sensors as well as an extra bung if you choose to run