Doug Thorley Header
- Regular Price:
$283.21-1,247.14 - You Save: $60.21-265.14
- Our Price:$223.00-982.00
- Shipping:FREE SHIPPING
Choose Your Vehicle:
- Legendary header performance that's over 50 years in the making
- 14-gauge steel tube construction for excellent life span, custom designed to fit your exact vehicle
- Available in three different styles to complement your vehicle and needs
- 50 State smog legal - includes all required smog equipment and mounting locations
- Comes with a custom gasket for no-leak fit and performance
- Available in straight Chrome or with Ceramic-Thermal coating
- Includes O2 sensor bosses
- Lifetime Warranty
Doug Thorley started an exhaust header revolution in the late 1950s that continues to this day. Thorley combined top notch craftsmanship, diligent tuning, and unsurpassed attention to details to create the highest quality headers on the hot rod scene. Over 50 years later, Doug Thorley Headers continues this tradition with three performance-enhancing designs:
Tri-Y Headers are uniquely engineered to properly match your firing sequence, minimizing exhaust resistance. This synchronized tuning gives you maximum torque and power gains from idle to 4500 RPM, as well as increases in fuel economy.
Shortie Headers are designed to fit vehicles with limited space under the hood. They are very easy to install, and are specially designed to maintain emissions mounting positions for compliance with the strictest smog standards. Expect improved performance and even better gas mileage.
Long Pipe Headers are very popular in the high performance street scene. They are tuned to give you maximum power across the entire RPM range by using larger and longer primary tubes. Long Pipe Headers are 50 state street legal, and improve your mileage by 2-3 MPG.
All Doug Thorley Header models are made from 14-gauge steel tube for supreme longevity, and are custom designed and tuned to perform and fit flawlessly under your hood. Choose from two finishes: Chrome headers resist initial rust or corrosion, but normally discolor upon initial fire-ups. Ceramic headers are coated inside and out with a Ceramic-Thermal Coating that protects your header from the elements and withstands up to 1,400 degrees F. This promotes exhaust velocity and absorbs up to 40% of the engine temperature, keeping your engine running cooler and more efficiently.
Your Doug Thorley Header comes with O2 sensor bosses, smog equipment, and a custom gasket for 50-state legality and a leak-free fit. Doug Thorley warranties your performance Headers for as long as you own your vehicle.
Tri-Y Headers are uniquely engineered to properly match your firing sequence, minimizing exhaust resistance. This synchronized tuning gives you maximum torque and power gains from idle to 4500 RPM, as well as increases in fuel economy.
Shortie Headers are designed to fit vehicles with limited space under the hood. They are very easy to install, and are specially designed to maintain emissions mounting positions for compliance with the strictest smog standards. Expect improved performance and even better gas mileage.
Long Pipe Headers are very popular in the high performance street scene. They are tuned to give you maximum power across the entire RPM range by using larger and longer primary tubes. Long Pipe Headers are 50 state street legal, and improve your mileage by 2-3 MPG.
All Doug Thorley Header models are made from 14-gauge steel tube for supreme longevity, and are custom designed and tuned to perform and fit flawlessly under your hood. Choose from two finishes: Chrome headers resist initial rust or corrosion, but normally discolor upon initial fire-ups. Ceramic headers are coated inside and out with a Ceramic-Thermal Coating that protects your header from the elements and withstands up to 1,400 degrees F. This promotes exhaust velocity and absorbs up to 40% of the engine temperature, keeping your engine running cooler and more efficiently.
Your Doug Thorley Header comes with O2 sensor bosses, smog equipment, and a custom gasket for 50-state legality and a leak-free fit. Doug Thorley warranties your performance Headers for as long as you own your vehicle.
