This aggressive race-only exhaust includes both mid and center pipes (bolt-on from the downpipes back) which eliminate the secondary catalytic converters. This eliminates a HUGE amount of exhaust restriction, opening the door for huge power gains, particularly on cars with increased boost.

As this exhaust eliminates the secondary cats, which are federally mandated emissions equipment, this system is for OFF ROAD RACING USE ONLY. NOT LEGAL FOR USE ON PUBLIC ROADS.

Made in the USA using the highest grade T-304 stainless. Includes mid pipes, center pipes, and rear muffler sections, as well as the correct size clamps for a completely bolt-on installation.

This Borla race exhaust fits the following BMWs:
2008+ E82 1 Series 135i coupe