Kooks 21613421 Stainless 3" H.O GREEN Catted ULTRA OEM-Connect X-Pipe for 2006-2013 Corvette ZO6/ZR1

Kooks 21613421 Stainless 3" H.O GREEN Catted ULTRA OEM-Connect X-Pipe for 2006-2013 Corvette C6 ZO6/ZR1

The Kooks 3" Stainless H.O. GREEN Catted ULTRA X-Pipe from Accesspeed will unleash the full potential of your 2006–2013 Corvette C6 Z06 or ZR1. The Kooks H.O. GREEN Catted ULTRA X-Pipe is engineered exclusively for LS7 and LS9 performance. Designed to integrate with 3" OEM-style exhaust systems, this upgraded ULTRA X configuration uses a full-length Long Merge to improve scavenging, enhance top-end power, and deliver the unmistakable X/H-inspired tone Corvette enthusiasts love.

Equipped with H.O. GREEN high-flow catalytic converters, this system refines exhaust character while preserving the aggressive personality expected from a ULTRA X layout. Expect a crisp, exotic edge under acceleration complemented by a deeper, more composed mid-range resonance, providing a balanced, performance-driven sound that stands out without overwhelming rasp. Crafted from premium 3" stainless steel and built for high-performance applications, this system pairs only with Kooks Long Tube Headers. Together, they create a smooth, unrestricted exhaust path that sharpens throttle response and elevates the driving experience of your LS-powered Corvette.

Features & Benefits:

• H.O. GREEN Catted ULTRA X design for improved performance and refined exhaust tone
• Full-length Long Merge for enhanced exhaust pulse scavenging
• Includes front connections to interface directly with Kooks Long Tube Headers
• High-Output catalytic converters for smoother, more controlled sound output
• Mandrel-bent 3" stainless steel tubing for optimized flow and long-term durability
• CNC-built construction ensures precision fitment and consistent quality
• Connects directly to 3" OEM (Z06/ZR1-style) rear exhaust systems

Fitment Notes:

• Designed for 2006–2013 Corvette C6 Z06/ZR1 (LS7/LS9)
• Requires Kooks Long Tube Headers
• Connects to 3" OEM (Z06/ZR1-Style) exhaust systems
• H.O. GREEN Cats support up to 1000+ RWHP

Notes

This item may not be legal for sale or use on public roads, and may be for offroad use only. California laws prohibit the use of any aftermarket exhaust part or system that modifies, removes or replaces original equipment catalysts unless the California Air Resources Board has issued an Executive Order regarding such part or system or unless the part or system is exempted by being used only on racing vehicles on closed courses. Neither Accesspeed, Kooks Headers and Exhaust, nor any of their subsidiaries make any representation that any of their parts or systems has received such an Executive Order or that any of their parts or systems conform with the racing vehicles exemption. The purchasers are entirely responsible for informing themselves of applicable California laws and to comply with those laws.

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