MAD BMW G8x M3 M4 Downpipes S58 5 series Stage 3 Kit includes

Stage 3 Kit includes

Snow Performance Hyper-Sonic Water Methanol Nozzle

The catless design eliminates the restrictive catalytic converter

This charge pipe is also missing a 1/8th npt plug

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

MAD BMW G8x M3 M4 Downpipes S58 5 series Stage 3 Kit includesUpgrade 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