Kooks 2311H430 Long Tube Headers & GREEN X-Pipe – Cadillac CTS-V (LS9)

The Kooks 2311H430 Header and GREEN Connection Kit is engineered for 2009–2015 Cadillac CTS-V models powered by the supercharged 6.2L LS9 V8. This complete performance exhaust solution features Kooks’ proven 1-7/8″ long tube headers paired with a high-flow GREEN catted stainless steel X-pipe, delivering significant gains in horsepower, torque, and throttle response.

Constructed from premium 304 stainless steel, the headers utilize a full 3-inch collector design for maximum exhaust flow, while the included GREEN catted X-pipe transitions to the OEM 2.5-inch exhaust connection for proper fitment. This system is designed to integrate with the factory exhaust after cutting the stock system, making it an ideal upgrade for high-performance street and track CTS-V builds. Like all Kooks products, this system is dyno- and race-tested and handcrafted in the USA.

Key Features

• 1-7/8″ stainless steel long tube headers

• Includes GREEN high-flow catted stainless steel X-pipe

• Improves horsepower, torque, and exhaust scavenging

• Designed specifically for the LS9-powered CTS-V

• Premium 304 stainless steel construction

• Race-proven Kooks performance and fitment

Technical Specs

• Header Type: Long Tube Headers

• Primary Tube Diameter: 1.875 in.

• Collector Diameter: 3.000 in.

• X-Pipe Diameter: 3.000 in. → 2.5 in. (OEM connection)

• Material: 304 Stainless Steel

• Catalysts Included: GREEN High-Flow Cats

• Exhaust Modification Required: Cutting of factory exhaust

• Manufacturing: Handcrafted in the USA

• Warranty: Limited Lifetime Warranty

Vehicle Fitment

• 2009–2015 Cadillac CTS-V

  • Engine: 6.2L LS9 Supercharged V8