MAD N55 Catted Downpipe BMW M135 M235 M2 335 435 4.0"

Upgrade the stock N55 downpipe to the MAD N55 Catted Downpipe for maximum airflow, power and sound. Crafted from premium 304 stainless steel to handle extreme temperatures, its smooth piping transition frees up exhaust flow for more horsepower, torque and throttle response.

A high-flow 200-cell Euro 5 catalytic converter keeps emissions and smell down while delivering maximum flow and minimal backpressure — a noticeable lift in sound and drivability. It bolts directly onto the stock exhaust with no cutting or welding, and works with aftermarket systems too.

Features

• 200-cell Euro 5 catalytic converter that reduces smell while keeping performance high.
• Up to 30 HP on stock turbos — even more with upgraded turbos.
• Smooth bends for maximum airflow with no drone.
• Lifetime warranty on defects and fitment; 90-day return; ships in 1–2 business days; spot-on fitment.

Fitment

• 2014–2015 BMW M135i & xDrive (after 07/13 production)
• BMW M235i & xDrive
• BMW M2
• 2014–2015 BMW 335i & xDrive (after 07/13 production)
• BMW 435i & xDrive

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.