Upgrade from the stock N54 downpipes to the MAD N54 catless downpipes for maximum airflow, power, and sound!

Upgrade to the MAD BMW N54 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 bonus, your car will sound a lot nicer as well.

Expect up to a 30HP increase on a tuned BMW N54 with stock turbos, even more on cars with upgraded turbos.


Compatible with right-hand drive and left-hand drive vehicles
Smooth bends for maximum airflow without any drone
Up to 30HP increase on the stock turbos, even more on upgraded turbos
Gaskets and mounting included
Lifetime warranty on defects and fitment
All orders ship in 1-2 business days
Spot on fitment


2007-2010 BMW 335Xi

Current Stock:
22.00 (in)
12.00 (in)
5.00 (in)

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