MAD BMW S55 3.5" Fat Boy Downpipes M2C M3 M4 W/ Flex Section f82 this downpipe is engineered to

this downpipe is engineered to deliver maximum performance gains by optimizing exhaust flow

Every VRSF product includes our lifetime warranty & our “No Hassle” satisfaction guarantee which includes fitment & defects

As leaders of the valved exhaust industry

The VRSF Intercoolers are the most proven

Includes two 1/8″ NPT bungs for water injection

MAD BMW S55 3.5" Fat Boy Downpipes M2C M3 M4 W/ Flex Section f82 this downpipe is engineered toWe are proud to introduce the MAD S55 Fat Boy 3. 5" Downpipes. These are the largest BMW S55 M2 M3 M4 downpipes on the market. Upgrade from the stock S55 downpipes to the MAD 3. 5" S55 catless downpipes for maximum airflow, power, and sound! Upgrade to the MAD BMW 3. 5" S55 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