Kooks Headers 23113400 3in. Stainless Steel High Output Green Catted X-Pipe

The Kooks 23113400 is a 3-inch stainless steel High Output Green Catted X-Pipe designed for the 2009–2015 Cadillac CTS-V LS9 6.2L V8. This X-pipe features a 3-inch inlet transitioning to a 2-1/2-inch OEM outlet, allowing it to connect directly to the factory exhaust system. Stock exhaust cutting is required for installation, and Kooks long tube headers are necessary for proper fitment.

Kooks Green catalytic converters are high-flow units engineered to reduce exhaust backpressure while maintaining emissions-compliant operation. The X-pipe crossover design balances exhaust pulses between cylinder banks, improving scavenging efficiency for measurable power and torque gains over a stock mid-pipe.

Key Features:

• 3-inch inlet x 2-1/2-inch OEM outlet configuration
• High Output (H.O.) Green high-flow catalytic converters
• Constructed from T304 aircraft-quality stainless steel
• X-pipe crossover design for improved exhaust scavenging and power
• Connects to OEM exhaust — no full system replacement required
• Dyno and race tested for maximum performance
• Handcrafted in the USA
• Backed by a limited lifetime warranty to the original purchaser

Kooks Headers and Exhaust has been manufacturing high-performance exhaust components since 1962, earning championships across the NHRA, IHRA, NMCA, NMRA, NASCAR, NASA, SCCA, and more. All Kooks products are independently owned, family operated, and built in the USA.