Kooks Headers 1131H020 1-5/8" Long Tube Headers with 2-1/2" Catted X-Pipe Kit for Mustang GT

The Kooks Headers 1131H020 is a complete long tube header and X-pipe system engineered specifically for 2005-2010 Ford Mustang GT models equipped with the 4.6L 3-valve engine. This comprehensive exhaust kit combines 1-5/8" diameter stainless steel long tube headers with a 2-1/2" catalyzed X-pipe to deliver substantial horsepower and torque gains while maintaining emissions compliance.

Key Features:

• 1-5/8" diameter primaries with optimized tube lengths for maximum exhaust scavenging
• 2-1/2" diameter X-pipe design with high-flow catalytic converters for 50-state legal emissions compliance
• Premium T304 stainless steel construction for exceptional durability and corrosion resistance
• CNC-machined flanges and mandrel-bent tubing ensure perfect fit and flow characteristics
• 3/8" thick laser-cut flanges prevent warping and exhaust leaks
• Complete bolt-on installation with all necessary hardware and gaskets included
• Designed and handcrafted in the USA with precision TIG welding

This system provides significant performance improvements over restrictive factory exhaust manifolds, typically adding 25-35 horsepower and improved throttle response throughout the RPM range. The X-pipe crossover design balances exhaust pulses between cylinder banks for optimized flow and an aggressive exhaust note. Each Kooks header system is backed by over 50 years of racing heritage and exhaust engineering expertise, ensuring professional-grade quality for street and track applications.

WARNING: This product may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.