BMW 3 Series F80 M3 / 4 Series F82 M4 2014-2020 – 2nd Decat Downpipes

Gravity Performance decats are made to completely replace the stock catalytic converter eliminating all restrictions. Our Performance decats improve throttle response and allow for improved exhaust flow increasing power and torque. Noticeably improves throttle response Manufactured from high quality T304 grade stainless steel Designed to be a direct replacement to the OEM part Mandrel bent and fully TIG welded for strength and durability Free flowing catalyst replacement to get the most from the 3.0 S55 engine