This 2.5" diameter Cat-Back system features our latest engineering techniques to give you our classic S-Type sound without any "drone". The system features a Merge X-Pipe for increased performance and improved sound. The exhaust exits thru dual 4" x 2.5" rectangle polished T-304 stainless steel tips on each side for sharp appearance. 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 300-series 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. Engineering innovation, high-quality materials and state-of-the-art manufacturing make it easy to see why BORLA® is THE choice of performance enthusiasts worldwide. For more information on BORLA® products, visit www.borla.com or call toll-free 1-877-GO BORLA. Also check out our exhaust sound comparison videos on YouTube at www.youtube.com/borla.