The BORLA? Cat-Back? is the perfect addition to the tenth generation Honda Civic Si. Our Cat-Back? systems for the Honda Civic Si are specifically tuned for the car?s 1.5L Turbo engine and are designed for easy, bolt-on installation. Our S-Type sound level delivers a sound that is much sportier than the barely audible factory exhaust. This particular system has been designed to fit the Civic Si Sedan and features dual 4.25? Intercooled T-304 Stainless Steel Tips with a polished finish. 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.