Kooks Tri-Y Stepped Headers with Ultra-GREEN High-Flow Cats for 2023–2025 Chevrolet Corvette C8 Z06 5.5L LT6 – 1-7/8” to 2” Stainless Steel

Product Description

Unlock the full potential of your Chevrolet Corvette C8 Z06 with Kooks Tri-Y stepped headers and Ultra-GREEN high-flow catalytic converters, engineered specifically for the high-revving 5.5L LT6 engine.

This performance exhaust system features a stepped 1-7/8” to 2” Tri-Y header design, optimized to improve exhaust scavenging, increase airflow velocity, and deliver stronger mid-range torque and top-end power. The Tri-Y configuration is ideal for maximizing performance on naturally aspirated engines like the LT6, providing a more efficient exhaust pulse flow compared to traditional long-tube headers.

Constructed from premium 304 stainless steel, these headers are built for long-term durability, heat resistance, and corrosion protection. The included Ultra-GREEN high-flow catalytic converters further enhance exhaust flow while maintaining compatibility with modern fuel types, including pump gas, E85, and unleaded race fuel.

Designed with a stock bolt pattern and flanged connections, this system installs directly to OEM exhaust components without requiring additional parts. The kit comes complete with Ultra-GREEN catted connection pipes, making it a full performance solution in one package.

Optional Jet-Hot ceramic coating is available to reduce heat, improve durability, and enhance appearance.

Key Features

• Stepped 1-7/8” to 2” Tri-Y header design for optimized performance
• Improves exhaust scavenging and airflow efficiency
• Ultra-GREEN high-flow catalytic converters included
• Full 304 stainless steel construction for durability
• Direct bolt-on installation with OEM-style flanges
• Compatible with factory exhaust system
• Supports pump gas, E85, and race fuel applications
• Optional Jet-Hot ceramic coating for heat management
• Complete system with no additional parts required

Fitment

• 2023–2025 Chevrolet Corvette C8 Z06 (5.5L LT6)

Additional Information

• Built-to-order product
• Estimated lead time: 6–8 weeks (up to 12 weeks depending on demand)
• Professional installation strongly recommended