ar design 135i / 335i / 335xi Catted Downpipe (N55, 2011-)

ar design 135i / 335i / 335xi Catted Downpipe (N55, 2011-)

Product Information

We are thilled to present our new 135i / 335i / 335xi Hi-Flo™ catted downpipe for the BMW N55 engine! The only downpipe on the market with a large 5" body heavy-metal catalyst! In addition to an intoxicating and exotic sound, these downpipes add significant power and help eliminate turbo lag!

Our Hi-Flo™ 4" Race-Catted Downpipes Feature:

The only catted downpipe with a 5" heavy metal catalyst currently on the market! Built with a carefully made collector that mates to the factory style exhaust.
Typical gains with tuning in the 15+hp range!
100% hand crafted in the USA from premium 304 Stainless Steel - flanges and O2 bungs included!
Water-jet cut 304 Stainless cat-back flanges, and CNC'd 304 Stainless V-Band flange.
100% TIG welded, argon back-purged.
Set of our exclusive bomb-proof exhaust gaskets included.
Grade 10.9 Metric Hardware (145,000PSI tensile strength, C32-C39 Rockwell, Zinc Plated), and Nord-Lock positive locking re-usable washers included.
Factory location O2 bungs, with an added bung for a wideband O2 sensor!
Available with a 2000°F ceramic coating. Coatings come with a 3 year warranty against corrosion and rust to original owner.
Lifetime warranty against any manufacturing defects given to original owner.

Product Code: arcatn55

In Stock: 4

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Your #1 Source for Performance Parts for the N54/N55