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      11-15-2012, 01:44 PM   #1
ar design II
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Ar Design - 550i 3" Hi-Flo Downpipes w/ 5" Race Cats

We are extremely excited to present our 550i 3" Hi-Flow™ downpipes, now with Magnaflow race cats! The only TRUE 3" catted downpipes currently on the market! In addition to an intoxicating and exotic sound, these downpipes add significant power and virtually eliminate turbo lag, making the amazing N63 engine even more responsive!

Our Hi-Flo™ 3" Downpipes w/Race Cats Feature:

100% hand crafted in the USA from premium 304 Stainless Steel (cats are made from 409 Stainless) - flanges and O2 bungs included!
Water-jet cut 304 Stainless cat-back flanges, and CNC'd 304 Stainless V-Band flanges.
Magnaflow 5" bodied metal substrate race cats
100% TIG welded, argon back-purged.
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 2000F 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.
We do NOT grind/polish our welds as some other manufacturers do. Grinding welds compromises the strength of the weld, and can lead to weld failure! Especially critical in applications exposed to temperatures in excess of 1600F. Such temperatures will also rapidly deteriorate the polished finish.





Check out some video here

Pm For Best Price!

Last edited by ar design II; 07-11-2013 at 04:40 PM.