Kooks 1-7/8-Inch x 2-Inch Tri-Y Headers with 5-Inch Ultra GREEN Cats (2181HY30) - 2023-2026 Chevrolet Corvette C8 Z06 5.5L
Upgrade your C8 Corvette Z06 with a complete performance-focused exhaust package using the Kooks 1-7/8-Inch x 2-Inch Stainless Steel Stepped Tri-Y Headers and Ultra GREEN Cat Kit. Designed specifically for the 2023-2026 Chevrolet Corvette Z06 5.5L, this system combines premium 304 stainless steel headers with matched Ultra GREEN catted connection pipes for a complete bolt-on exhaust solution.
The stepped Tri-Y header design uses 1-7/8-inch and 2-inch tubing to create a performance-oriented exhaust path for the high-revving 5.5L engine. The included Ultra GREEN catted connection pipes feature flanged outlets that connect directly to the OEM exhaust, allowing the complete system to integrate with the factory exhaust layout without requiring additional connection components.
Features
- Kooks stepped Tri-Y header and Ultra GREEN cat kit
- 1-7/8-inch x 2-inch stepped header design
- 304 stainless steel construction
- Designed specifically for the Chevrolet Corvette C8 Z06 5.5L
- Oval port design
- Stock bolt pattern
- Stepped Tri-Y header configuration
- Includes Ultra GREEN catted connection pipes
- 5-inch Ultra GREEN catalytic converter configuration
- Flanged connection pipe outlets
- Connection pipe outlets connect directly to the OEM exhaust
- Matched header and catted connection package
- No additional parts required for installation
Stepped Tri-Y Header Design
Kooks engineered the headers around a stepped Tri-Y configuration using 1-7/8-inch and 2-inch tubing. This layout provides a performance-oriented exhaust path designed specifically for the C8 Z06 platform while maintaining application-specific fitment through the stock bolt pattern and oval port configuration.
Ultra GREEN Catted Connections
The kit includes Kooks Ultra GREEN catted connection pipes, giving the system a complete matched exhaust solution rather than requiring separate connection components. These pipes are designed to work directly with the included headers and transition into the factory exhaust system through flanged outlets.
OEM Exhaust Integration
The flanged connection pipe outlets connect directly to the OEM exhaust, allowing the Kooks header and Ultra GREEN cat package to integrate with the factory exhaust layout. This helps simplify installation while preserving compatibility with the rear portion of the stock exhaust system.
Construction & Durability
The headers are constructed from 304 stainless steel for strength, durability, and corrosion resistance. This material is well suited for the demanding temperatures and operating conditions of the C8 Z06's 5.5L engine while providing long-term reliability in a performance exhaust application.
Fitment
- 2023 Chevrolet Corvette C8 Z06 5.5L
- 2024 Chevrolet Corvette C8 Z06 5.5L
- 2025 Chevrolet Corvette C8 Z06 5.5L
- 2026 Chevrolet Corvette C8 Z06 5.5L
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