We are extremely excited to present our new Z4 E89 3" Hi-Flow catted 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 Hi-Flow 3" Catted Downpipes Feature:
The only TRUE 3" catted downpipes currently on the market! 3" tubing until cat-back flange - all systems currently on the market reduce to 2.5" much closer to the turbocharger.
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.