BMW N54 MAD Downpipes 135I 1M 335I RWD

Upgrade from the stock N54 Catless 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.

Features:

• 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
• 20 day return period
• Spot on fitment

Fitment:

• 2011-2012 BMW 1M
• 2008-2010 BMW 135i
• 2007-2010 BMW 335i
• 2011-2013 BMW 335is