This 3 in. diameter True Dual Borla Cat-Back system features a Merge X-Pipe for increased performance and improved sound. This system contains valves that retain the Active Exhaust functionality. It features the classic S-Type sound with no drone inside the vehicle and 4 in. bright chrome on T-304 stainless steel tips. Systems with black chrome on T-304 stainless steel tips, and carbon fiber tips are also available. Borla Cat-Back and 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.