Active Autowerke F8x M3/M4 S55 Catless Downpipes (For Offroad/Race Use) M4 varis carbon fiber lip FK Teflon lined 1" spherical

FK Teflon lined 1" spherical bearings

Minimum Flow 1050cc @ 5 bar (72

5″ Street Exhaust merges the two downpipe connections into one 3

• Looks great under the hood

Don't settle for a stock exhaust system – unleash the full potential of your engine with these high-performance downpipes

Active Autowerke F8x M3/M4 S55 Catless Downpipes (For Offroad/Race Use) M4 varis carbon fiber lip FK Teflon lined 1" sphericalThese 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 didnt 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