3″ Exhaust Decat Downpipes – BMW 3 / 4 Series F82 M4 / F80 M3 3.0L 14-20

Manufactured from highest quality T304 grade stainless steel Free flowing catalyst replacement to get the most from the 3.0 S55 engine 3" Design to improve power and torque across the entire RPM range Designed to be a direct replacement for the OEM catalytic converter Noticeably improves throttle response