We are extremely excited to present our new Z4 E89 3" Hi-Flow downpipes. The only TRUE 3" downpipes currently on the market! These downpipes add significant power and virtually eliminate turbo lag, making the fabled N54 engine even more responsive!
Our 3" HI-Flow Z4 Downpipes Feature:
Typical gains with tuning in the 30bhp range!
100% hand crafted in the USA from premium 304 Stainless Steel - flanges and O2 bungs included!
CNC 304 Stainless cat-back flanges, and CNC 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 2000Â°F ceramic coating. Coatings come with a 3 year warranty against corrosion and rust.
Lifetime warranty against any manufacturing defects given to original owner.
This product is intended for off-highway application only. Installation of this part on a vehicle that is driven on public roads may violate U.S. and Canadian laws and regulations relating to emission requirements and motor vehicle safety standards.