Upgrade 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 backpressure 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 upgraded turbos.

The heat will expand/weaken the pipes, while with engine movement, the flex pipe will help reduce the stress on that red hot expanded/weakened pipes.

Features:

Compatible with right-hand drive and left-hand drive vehicles

Smooth bends for maximum airflow without any drone

Up to 30HP increase on the stock turbos, even more on upgraded turbos

Lifetime warranty on defects and fitment

90 day return period

All orders ship in 1-2 business days

Spot on fitment

Flex section

The suggested retail price is $509

Fitment:

2014+ BMW M3

2015+ BMW M4

SKU:

MAD-032