MAD BMW S55 Downpipes M2C M3 M4 W/ Flex Section

Swap the restrictive stock S55 downpipes for the MAD S55 Catless Downpipes and free up maximum airflow, power and sound. Removing the factory cats eliminates backpressure so the turbos spool faster and make more power — with a far better exhaust note. The flex section reduces stress and vibration from heat and engine movement.

Expect up to a 30 HP increase on a tuned S55 with stock turbos, and even more on upgraded turbos.

Features

• Compatible with right- and left-hand-drive vehicles.
• Smooth bends for maximum airflow with no drone, plus a flex section.
• Lifetime warranty on defects and fitment; 90-day return; ships in 1–2 business days; spot-on fitment.

Fitment

• 2018+ BMW M2 Competition
• 2014+ BMW M3
• 2015+ BMW M4

Emissions disclaimer: This product is not legal for sale or use on pollution-controlled vehicles operated on public roads and is intended for off-road, race, or closed-course competition use only. You are responsible for compliance with all applicable emissions laws; use on public roads may violate the Federal Clean Air Act (42 U.S.C. § 7522) and similar state laws. Please check your local laws before purchase and installation.

Ships from our Vancouver shop — KORE SPEED is proudly Canadian-owned, with no surprise cross-border duties for Canadian buyers. Questions on fitment? Email support@korespeed.com.