CORSAs Patented Reflective Sound Cancellation® (RSC) Technology allows acoustic engineers to create a drone free exhaust sound, styled specifically to fit the personality of your vehicle. Each system is designed to increase vehicle performance, deliver an AGGRESSIVE SOUND under acceleration and a DRONE-FREE EXPERIENCE during cruise. Performance gains are not affected by sound choice. Sport Cat-Back Exhaust System; Dual Rear Exit; 3 in. Dia.; Incl. Muffler/Pipes/Clamps/Twin 3.5 in. Black Pro-Series Tips; 11-14 STI; WRX SEDN 2.5T Fitment: 2011 Subaru Impreza WRX 2011 Subaru Impreza WRX Limited 2011 Subaru Impreza WRX Premium 2011 Subaru Impreza WRX STI 2011 Subaru Impreza WRX STI Limited 2012 Subaru Impreza WRX 2012 Subaru Impreza WRX Limited 2012 Subaru Impreza WRX Premium 2012 Subaru Impreza WRX STI 2012 Subaru Impreza WRX STI Limited 2013 Subaru Impreza WRX 2013 Subaru Impreza WRX Limited 2013 Subaru Impreza WRX Premium 2013 Subaru Impreza WRX STI 2013 Subaru Impreza WRX STI Limited 2014 Subaru Impreza WRX 2014 Subaru Impreza WRX Limited 2014 Subaru Impreza WRX Premium 2014 Subaru Impreza WRX STI 2014 Subaru Impreza WRX STI Limited