Upgrade from the stock N55 downpipe to the MAD N55 catless downpipe for maximum airflow, power, and sound!
The Mad N55 Catless Downpipe is a high-quality aftermarket performance part designed to enhance the power and sound of your BMW. Made from premium-grade stainless steel, this downpipe is engineered to deliver maximum performance gains by optimizing exhaust flow.
The removal of the catalytic converter allows for a freer flow of exhaust gases, resulting in improved turbo spool, increased horsepower and torque, and an aggressive exhaust note that will turn heads on the street or track. The Mad N55 Catless Downpipe is also designed to be a direct bolt-on replacement for your stock downpipe, making installation quick and easy.
This downpipe is specifically designed for use with BMW N55 engines and is compatible with a wide range of BMW models including the 135i and 335i Additionally, the Mad N55 Catless comes with a limited lifetime warranty, ensuring that you get a reliable and durable product.
Upgrade your BMW's performance and sound with the Mad N55 Catless Downpipe and experience a driving experience like no other.
Features:
- Smooth bends for maximum airflow without any drone
- Up to 30HP increase on the stock turbos, even more on upgraded turbos
- Lifetime warranty on defects and fitment
- All orders ship in 1-2 business days
- Spot on fitment
- Flex section
Fitment:
- 2012-2013 M135 (Up tp 07/13 production)
- 2012-2013 335 Sedan (Up to 07/13 production)
Emissions Disclaimer:
This product is not legal for sale or use on pollution-controlled vehicles operated on public roads, highways, or streets. It is intended for off-road, race, or closed-course competition use only, where such modifications are permitted.
By purchasing this product, you acknowledge and agree that:
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You are responsible for compliance with all applicable emissions laws and regulations.
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MAD and its affiliates disclaim any liability for improper or unlawful use of this product.
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Use of this part 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.
1 Review Hide Reviews Show Reviews
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Open up the hp
I got this catless 3.5 downpipe. Ordered it for that wonderful price. Before I knew it FedEx was at my door. Super fast shipping. Open the box to inspect the downpipe and was truly impressed with the build quality. The Welds were very dime looking and I am very confident that it was going to hold up. Then I took off that stock downpipe(and no I’m not selling it lol) in its place this new shiny downpipe went in fairly quickly. And the fitment was good everything lined up how it’s supposed to be. I Opened mhd and set it for aftermarket downpipe so no check engine light. then I turned it on and omg is all I could say. It sounds more like the og m2 than a 335i. Took it around the block and could instantly feel the difference in power. It was a lot louder… Im about 2 months since I put it in and still love the sound. I get compliments for a lot of people on the sound. I would say this is a definite 10 out of 10.
