MAD BMW F & G Chassis 5" B58 Catted Downpipe M240 340 M340 440 M440 540 W/ No CEL Guarantee & Bracket MAD-120 BMW-E89 Z4-2012 Some of the many map

Some of the many map features provided

UV Protective clear coat finish to protect carbon mold and weave from the elements and debris

Simple installation

including increased horsepower

MAD BMW F & G Chassis 5" B58 Catted Downpipe M240 340 M340 440 M440 540 W/ No CEL Guarantee & Bracket MAD-120 BMW-E89 Z4-2012 Some of the many mapUpgrade your BMWs performance and sound with the MAD 5" Catted Downpipe, engineered specifically for B58 powered BMW F and G chassis models. This high performance downpipe delivers increased horsepower, improved throttle response, and a deeper, more aggressive exhaust noteall without triggering a check engine light. Crafted from race grade 304 stainless steel, the downpipe features a smooth, mandrel bent 5" design for maximum flow. A 300 cell high