Kooks Headers 21703220 3-Inch Ultra Catted Stainless Steel X-Pipe

The Kooks Headers 21703220 is a 3-inch Ultra Catted X-Pipe engineered to complement Kooks Long Tube Headers on the C7 Corvette platform. Built from mandrel-bent T304 aircraft-grade stainless steel, this high-performance crossover pipe delivers optimized exhaust flow, reduced backpressure, and a refined aggressive exhaust tone that LT-powered Corvette enthusiasts demand.

Featuring an ULTRA X configuration with high-flow catalytic converters, this mid-pipe strikes a balance between performance output and controlled sound character. CNC-built construction ensures repeatable precision fitment, while the front connections are designed to interface directly and exclusively with Kooks Long Tube Headers for a seamless, leak-free system.

Key Features:

• 3-inch mandrel-bent stainless steel tubing for maximum flow and long-term durability
• Ultra Catted X-Pipe design with high-flow catalytic converters for improved performance and refined exhaust tone
• Front connections engineered to mate directly with Kooks Long Tube Headers
• Rear outlets connect to 2-3/4-inch OEM-style rear exhaust systems for a direct bolt-on fit
• CNC-built construction for precision fitment and consistent quality
• Constructed from T304 aircraft-grade stainless steel for superior corrosion resistance and heat tolerance
• Designed, dyno-tested, and manufactured in the USA
• Backed by Kooks' limited lifetime warranty to the original purchaser

Note: This X-pipe must be used in conjunction with Kooks Long Tube Headers. Intended for off-road and racing use only. Not legal for sale or use in California or states that have adopted California emissions standards.