F30 335i Stainless Steel HFC Downpipe

New for 2012! Challenge has designed their new F30 335i stainless steel High Flow Cat downpipe. Each downpipe is made from 3inch mandrel bent stainless steel tubing and 200 cell matallic core cat. Custom machined 304 stainless flanges and formed mount brackets ensure a factory fit and long lasting performance. Current ECU version on US models are able to use this downpipe with no ECU flash or check engine light. Some models may require an ECU tune or flash. Off road or racing use only. Challenge exhaust parts are deisgned, engineered and manufactured in the USA.


  • – Made in the USA
  • – 200 Cell high flow cat
  • – Full stainless steel construction
  • – Laser cut and formed mounting brackets
  • – 3 in Piping
  • – OEM compatible V band flanges
  • – Full bolt on installation

MSRP: $650.00 USD