E90/ E91 325i 325xi/ 328i 328xi 2006-2011 Cat-Back Exhaust System Touring

This Cat-Back was designed specifically for the BMW 3.0L V6. The system features the mellow Touring sound level with no drone inside the vehicle. The system starts out with dual 2.25" diameter pipes that merge into a single 2.5" pipe. The exhaust exits the muffler thru dual 2.25" tail pipes with single 3.19" round polished T-304 stainless steel tips on each tail pipe. BORLA Cat-Back & Axle-Back exhaust systems feature patented straight-through and multi-core technology designed to unleash hidden horsepower. Increased exhaust velocity adds power, driving excitement, fuel economy, and the distinctive BORLA Sound of Power respected by motoring enthusiasts everywhere. Each system is built from premium T-304 stainless steel, superior to T-400 series knockoffs (such as 409), to give you the absolute best in performance and durability. Ultra-smooth mandrel bends ensure maximum flow & power, and precision computer numerical control (CNC) manufacturing ensures an accurate fit. Best of all, BORLA stands behind every system with a Million-Mile Warranty. Just what you’d expect from the world’s most experienced (and most winning) exhaust brand.