This 2.5" diameter BORLA® Cat-Back™ system is the perfect addition to Civic Sport Touring vehicles. Our Cat-Back™ system is specifically tuned for the 1.5L turbocharged engine and is designed for easy, bolt-on installation. It features BORLA®'s Polyphonic Harmonizer Technology which utilizes patented units that contain pipes of different diameters and lengths to create multiple exhaust notes that harmonize to deliver a clean, rich, full-bodied sound. Our classic S-Type sound level delivers a sporty sound that enhances the driving experience without any drone inside the vehicle. The system features a 2.5" tail pipes that exit thru the Original Equipment (O.E.) tips/ valance. Tips NOT included. Ultra-smooth mandrel bends ensure maximum flow & power, and precision computer numerical control (CNC) manufacturing ensures an accurate fit. To top it off, our systems are drone-free and made with premium, high-quality T-304 austenitic stainless steel to give you unmatched durability. Best of all, it comes with BORLA®'s Million-Mile warranty.