Kooks Headers 2411H420 1-7/8" Long Tube Headers with Catted Connection Kit

The Kooks Headers 2411H420 is a complete long tube header and high-flow catalytic converter connection kit designed specifically for 2004 Pontiac GTO models equipped with the LS1 5.7L engine. This system features 1-7/8" diameter primary tubes engineered to maximize exhaust flow and unlock significant horsepower and torque gains from your LS1 powerplant.

Key Features:

• Premium stainless steel construction for durability and corrosion resistance
• 1-7/8" primary tube diameter optimized for LS1 performance applications
• Includes high-flow catalytic converters for emissions compliance
• Complete connection kit with all necessary hardware for installation
• Precision mandrel-bent tubes maintain consistent exhaust velocity
• TIG welded merge collectors for superior strength and flow
• Handcrafted in the USA with over 50 years of racing heritage

Kooks Headers has been the industry leader in high-performance exhaust systems since 1962, with proven success across NHRA, IHRA, NMCA, NASCAR, and other premier racing organizations. Each header system is hand-built to exacting standards, delivering professional-grade quality for street, strip, and track applications. This complete kit provides everything needed to transform your GTO's exhaust system with a proven performance upgrade.