These BBK Performance long tube exhaust headers and matching high flow catted mid pipe kit are designed to deliver exceptional performance, quality, and fitment for your Ford Mustang GT 5.0. Crafted in the USA with CNC mandrel bent tubing, these headers provide unrestricted exhaust flow to maximize horsepower and torque across the RPM range. The system includes 3/8-inch laser-cut exhaust flanges, patented scavenging collector design, and gasketless ball and socket connectors, ensuring a secure and easy installation with the matching mid pipes. Every component in this kit is tailored specifically for your vehicle application to optimize performance gains and sound quality. The included high flow catalytic converters in the mid pipes enhance exhaust flow while promoting a more aggressive exhaust note. Designed as a direct replacement for factory headers and mid pipe, these headers bolt seamlessly to your existing cat-back exhaust system, creating a complete performance upgrade. With decades of experience in exhaust system design, BBK Performance has crafted this system to improve airflow, increase power output, and deliver a race-inspired sound. The system is suitable for use in performance applications where maximum flow and efficiency are desired, and it is built to withstand the demands of aggressive driving. Note that this system is not CARB approved, so it is intended for off-road or racing use only. Each kit ships in two boxes and is engineered for a straightforward installation that enhances your vehicle*s overall performance and sound profile. Features: CNC mandrel bent tubing for maximum exhaust flow Includes high flow catted mid pipe with catalytic converters Laser cut 3/8-inch exhaust flanges for durability Patented scavenging collector design for improved exhaust scavenging Gasketless ball and socket connectors for easy installation Compatible with factory exhaust system for seamless fitment Designed specifically for 2015-2023 Ford Mustang GT 5.0