CORSA Performance Catback 21047 CORSA's Patented Reflective Sound Cancellation(R) (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. Cat-Back 3.0in. Cat-Back Dual Rear Exit with Twin 4.0in. Polished Pro-Series Tips Corsa 18-20 Ford Mustang GT Convertible w/o Active Valves Sport Cat-Back w/ Polished 4in Tips

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