MAD BMW F & G Chassis 5" B58 Catted Downpipe M240 340 M340 440 M440 540 W/ No CEL Guarantee & Bracket g22 bmw 4 series psm style carbon fiber trunk lip Connection style: OEM connectors

Connection style: OEM connectors

0L 6-cylinder

this stealthy OEM+ upgrade is finished in wrinkle black powder coating for maximum durability and corrosion resistance

Featuring a stamped stainless steel merge upstream equivalent to dual 3” tubing coming right off of the downpipe

MAD BMW F & G Chassis 5" B58 Catted Downpipe M240 340 M340 440 M440 540 W/ No CEL Guarantee & Bracket g22 bmw 4 series psm style carbon fiber trunk lip Connection style: OEM connectorsUpgrade your stock B58 downpipe to the MAD B58 Catted Downpipe for more power, better sound, and guaranteed reliability without triggering a check engine light. The MAD Catted B58 Downpipe is the ideal performance upgrade for BMW owners who want more out of their car without the hassle. It's made from premium 304 stainless steel and built to handle extreme heat and tough driving conditions. The smooth piping design allows for maximum exhaust flow,