MAD BMW S55 3.5" Fat Boy Downpipes M2C M3 M4 W/ Flex Section f82 A single Q BOV can

A single Q BOV can support up to 1

Designed to fit the F Chassis BMW models

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

The VRSF Intercoolers are the most proven

Combined with the knowledge and skill of H&R’s suspension engineers

MAD BMW S55 3.5" Fat Boy Downpipes M2C M3 M4 W/ Flex Section f82 A single Q BOV canWe 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