MAD BMW S55 3.5" Fat Boy Downpipes M2C M3 M4 W/ Flex Section f82 Includes two 1/8″ NPT bungs

Includes two 1/8″ NPT bungs for water injection

As leaders of the valved exhaust industry

Designed to fit the F Chassis BMW models

The MAD F chassis BMW intercooler uses a high fin density core for maximum cooling

for your 2016+ F & G Series M140i

MAD BMW S55 3.5" Fat Boy Downpipes M2C M3 M4 W/ Flex Section f82 Includes two 1/8″ NPT bungsWe 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