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Kooks header and green catted X-pipe kit for 2011–2014 Ford Mustang Shelby GT500 pairs 1-7/8 x 3 headers with a green catted X-pipe to improve exhaust flow and midrange response. Drawing on decades of racing development, Kooks supplies this vehicle-specific kit as a performance-focused direct replacement for enhanced breathing and throttle feel.
Kooks 11-14 Ford Mustang Shelby GT500 1-7/8 x 3 Header & Green Catted X-Pipe Kit
