MAD BMW X3M & X4M S58 F97 F98 Downpipes n54 Minimal NVH increase

Minimal NVH increase

With options to go around

90 day return period

The core cools the charged air from the turbo before it enters the engine and the OEM BMW tube and fin intercooler is designed to support low boost levels and air flow

We are proud to introduce the MAD S55 Fat Boy 3

MAD BMW X3M & X4M S58 F97 F98 Downpipes n54 Minimal NVH increaseThe Mad X3M Downpipes Catless are the ultimate upgrade for your BMW X3M. Engineered and designed to increase power and performance, these downpipes are a game changer for any driving enthusiast. Crafted from high quality stainless steel, the Mad X3M Downpipes Catless feature a smooth mandrel bent design that ensures maximum exhaust flow and optimal performance gains. The catless design eliminates any restrictions in the exhaust system, allowing for