This 2.5" diameter Borla(r) Cat-Back(tm) system is the perfect addition to Civic Sport Touring vehicles. Our Cat-Back(tm) system is specifically tuned for the 1.5L turbocharged engine and is designed for easy bolt-on installation. It features Borla(r)'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 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(r)'s Million-Mile warranty. System Features:, Cat-Back(tm) Exhaust System, 2.25" Diameter System, S-Type Sound Level, No Drone, 4.5" Bright Chrome On T-304 Stainless Steel Tip, T-304 Stainless Steel, Million-Mile Warranty