Active Autowerke Swain Coated Catless Downpipe For Bmw M3, M4 2014-2019

Active AutoWerke 11-039

All orders will include an AutoTalent window decal


The F8X downpipes are strategically engineered to virtually eliminate the immensely restrictive characteristics of the factory F80 M3 and F82 M4 downpipes – therefore reducing radiant heat and increasing performance. Our initial prototype design didn’t include the flex joints you see in the images above. Without these flex joints, the prototypes created an annoying vibration from within the cabin. We quickly realized the necessity of including flex joints into the design and went back to the drawing board. The works of art you see above are a culmination of years of experience engineering top-notch BMW exhaust products.

Made from 1.3-1.5mm thick 304 stainless steel, our F80 M3 and F82 M4 downpipes can also be finished with a performance enhancing. Developed for precise fitment on both the F80 BMW M3 and F82 BMW M4, the difference in performance will be noticeable the moment you leave your driveway!


For Off-Road or Race Use Only!


  • 10-15 HP increase*
  • Flex joints to dampen vibration
  • White Lightning Exhaust Coating by Swain Tech Coatings
  • 304-stainless
  • Quicker turbo response
  • Less restrictive, more free flowing
  • Improved low-end and mid-range performance
  • Lighter weight than factory downpipes

                      Vehicle Fitment:

                      • 2014 Bmw F80 M3
                      • 2015 Bmw F80 M3 
                      • 2016 Bmw F80 M3
                      • 2017 Bmw F80 M3
                      • 2018 Bmw F80 M3
                      • 2019 Bmw F80 M3
                      • 2014 Bmw F82 M4
                      • 2015 Bmw F82 M4
                      • 2016 Bmw F82 M4
                      • 2017 Bmw F82 M4
                      • 2018 Bmw F82 M4
                      • 2019 Bmw F82 M4


                              Images are for representation purpose only and may differ depending on application.