The BBK High Flow X Pipe With Catalytic Converters is the perfect upgrade for your 1999-2004 Ford Mustang 4.6 GT or Cobra. Designed and built in the USA, BBK is the number one aftermarket performance exhaust brand in the country. \n\nThis X pipe features CNC mandrel bent tubing for a 35% increase in flow over stock, resulting in increased horsepower, torque, and overall performance. The 2.5 inch full length X pipe includes high flow 49 state legal catalytic converters, making it a great option for those looking to maintain OEM quality and drivability. \n\nCompatible with both stock and aftermarket shorty exhaust headers, this X pipe is a bolt-on installation that can add an additional 12-20 horsepower to your vehicle. The OEM style dome connections ensure easy fitment, making installation a breeze. \n\nConstructed from aluminized steel, this BBK High Flow X Pipe is built to last and provide years of reliable performance. Upgrade your modern day Dodge, Ford, or GM vehicle with this top quality product from BBK.