This BORLA® system is unique in the industry with an adjustable sound level. By changing the block off plates you can adjust the SPL (Sound Pressure Level) to your taste. BORLA® Cat-Back™ & Axle-Back exhaust systems feature patented straight-through and multi-core technology 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 austenitic 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. 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. Pipe Diameter: 3.8" x 3" Tip Size: 3.8" x 3" Tip Description: Dual Square Angle-Cut Intercooled 26 Tip #: Dual Split Rear Exit