BMW N54 1M/135i/335i Downpipes

We are extremely excited to present our 135i / 335i 3" Hi-Flow downpipes.  These downpipes add significant power and virtually eliminate turbo lag, making the fabled N54 engine even more responsive!

Downpipes Feature:

100% hand crafted in the USA from premium 304 stainless steel - flanges and O2 bungs included!
CNC 304 Stainless cat-back flanges, and CNC'd 304 Stainless V-Band flanges.
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
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.