Included in this system are Dual Mode Exhaust valves adding to the driving pleasure of auto enthusiast. System features a X-Pipe for improved performance and polished T-304 stainless steel tips for sharp appearance. 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-controlled CNC manufacturing ensures an accurate fit. BORLA(r) Cat-Back(tm) exhaust systems feature patented straight-through and multi-core technology is designedto unleash hidden horsepower. Increased exhaust velocity adds power, driving excitement, fuel economy, and the distinctive BORLA(r) Sound of Power respected by motoring enthusiasts everywhere. Best of all, BORLA(r) 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.