MAD BMW G8x M3 M4 Downpipes S58 5 series 5″ Race Intercooler Kit to

5″ Race Intercooler Kit to get the most out of your N54 or N55

The catless design eliminates the restrictive catalytic converter

*Features* * Extreme Performance Meets Extreme Style * Race-Car Like Handling * Lower than our Pro-Kit

Stage 3 Kit includes

all H&R Sway Bars are powder coated for long lasting performance

MAD BMW G8x M3 M4 Downpipes S58 5 series 5″ Race Intercooler Kit toUpgrade from the stock S58 downpipes to the MAD S58 catless downpipes for maximum airflow, power, and sound! Upgrade to the MAD BMW S58 downpipes to eliminate the back pressure caused by your stock catalytic converters. By upgrading to our downpipes, your turbos can now spool faster and achieve maximum power. As a bonus, your car will sound a lot nicer as well. Expect up to a 30HP increase on a tuned BMW S58 with stock turbos, even more on cars with