Installing a BBK Performance high flow resonator delete pipe will improve the exhaust flow on any 2015-17 Mustang 5.0 GT to increase horsepower and torque. This is a direct fit replacement for the restrictive OEM factory resonator and will improve the sound of your mustang as well as increase the performance. Available for factory exhaust or aftermarket systems using full length exhaust headers. Check your application before ordering. 16 gauge 2-1/2" CNC mandrel bent aluminized mild steel tubing significantly Improves exhaust flow for maximum horsepower and torque - Approx 37" Long - Cut & Install required Kit includes detailed instructions and all required hardware and clamps to complete installation Special factory sized 2-1/4" reducers allow installation on the factory exhaust (where applicable) - cut and clamp is required Designed to increase performance and add a more aggressive sound over stock