We are proud to offer the 485 Designs Audi S4 / A6 / Allroad 2.7T performance bi-pipe upgrade! This is a product we have been excited to release for quite some time, over many revisions and fine tweaking we have come to a finished product that in addition to the performance benefits from the oversize RS4 size piping, excites you to look at every time you pop your hood!


This bi pipe is made from stainless steel 304, TIG welded & back purged. Not only is it the best looking bi pipe on the market, but it also performs. Keep boost-leak free and not have to worry about the stock throttle body boot blowing off, or tearing. The inlet dimensions are 2 1/4” and ups to 3” outlet at the throttle body. 


- 2 mounting points on each side to bolt to factory timing covers


- 2/3 bar map sensor bung option


- High flow


- Vibrant HD clamp offers flexibility


- Diverter valve hose ports


Requires throttle body to be sent in for flange to be welded on. 


Note: stock clutch fan must be spaced out at least 5mm forward towards core support, or swapping to electric fan kit. 


Disclaimer: We will not take any accountability/warranty for poor fitment if flange is welded on by anybody other than us @ 485


1-2 week order processing time. 


Parts have been test fitted & fitment is ensured prior to shipping. 


THIS IS ONLY FOR THE Bi-Pipe ITSELF, THE INTAKE KIT AND Y-Pipe ARE AVAILABLE SEPARATELY IN THE STORE.



THIS PRODUCT IS FOR OFF ROAD USE ONLY

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485 Designs Audi S4 / A6 / Allroad 2.7T Bi-pipe

  • Product Code: 485BIPIPE
  • Availability: In Stock
  • $899.00