This 2.5" diameter into dual 2" tail pipes BORLA® Cat-Back™ system is tuned for performance and sound for the 2.4L engine in the BRZ and GR86. Our ATAK® sound level is designed to bring out the Subaru engine growl and provides an aggressive sound without any drone. This system features single 5" round carbon fiber with black anodized center tips on each tail pipe. Systems are also available with bright chrome on T-304 stainless steel tips, and black chrome on T-304 stainless steel tips. A system with a single outlet in the rear on the passenger side is also available. For ease of installation, this Cat-Back™ is a direct bolt on part and does not require cutting. 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. Like all BORLA® exhaust products, each system is handmade in the USA by master craftspeople and features premium, high-quality T-304 austenitic stainless steel construction. Ultra-smooth mandrel bends ensure maximum flow & power, and precision computer numerical control (CNC) manufacturing ensures an accurate fit. Best of all it features a Million-Mile Warranty.