This BORLA® Cat-Back™ system is tuned for performance and sound for both the 2.0L engine in the WRX and the 2.5L engine in the STI. Our S-Type sound level is designed to bring out the Subaru Boxer engine rumble and provides an aggressive sound without the drone. This system features 3.5” quad polished T-304 stainless steel tips, but is also available with Ceramic Black on T-304 stainless steel tips. For ease of installation, this Cat-Back™ is a direct bolt on part and does not require cutting. As with all of our products, it is constructed using high quality T-304 stainless steel and is backed by the BORLA® Million-Mile Warranty.