aFe Power Gas Short Tube Header for Ford Mustang 2011 - 2017

Performance Gains: This system produced gains of up to +14 HP and +15 lbs. x Ft. TQ. , as measured on our in-house dyno.1-5/8 IN 409 Stainless Steel Construction: This system is constructed of 1-5/8 IN mandrel-bent 409 stainless steel tubing for maximum strength and durability.Heavy Duty Flanges: Factory style laser cut machined mild steel flanges are used used for a secure leak-free seal.Mitered Collectors: 3-to-1 Mitered Merge collectors decrease turbulence and increases exhaust velocity. The result is increased horsepower, torque and improved throttle response.Hardware Included: Includes gaskets and lower outlet hardware for a direct bolt-on system. No cutting or modifications required for a hassle-free installation.Computer-Aided Design: Utilizing state-of-the-art computer-aided design technology, these headers are designed for custom, high tolerance factory fitment.MIG-Welded: 100% MIG-Welded for race-proven strength and durability.Emissions Disclaimer: This product is not currently CARB exempt and is not available for purchase in California or for use on any vehicle registered with the California Department of Motor Vehicles.