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Doug Thorley Tri-Y Headers

Doug Thorley
Doug Thorley Tri-Y Headers

Product images may differ from actual product appearance.

The Tri-Y was invented by Doug Thorley Headers and is designed to match the synchronization of the engine's firing order, thus maximizing exhaust scavenging.

Doug Thorley Tri-Y Headers create optimum torque and the greatest horsepower gains in comparison to any other design. They yield maximum power from idle to 4500 RPM while adhering to strict emissions standards. Engineered to be well-suited for multiple applications, power significantly increases at mid-range RPM for exceptional efficiency at highway speeds. Fuel economy and low-end torque are improved; back pressure, engine heat, and weight are all reduced.

  • 14-gauge steel tubing and 3/8" flanges
  • Easy installation
  • 50-state legal

  • 1 Product


    Doug Thorley THY214YFIC - Doug Thorley Tri-Y Headers
    Tri-Y Headers
  • 1988-97 Ford F250/F350/E250/E350/Motorhome 460 V8
  • Ceramic Coated
  • 1-3/4" Primaries
  • 2-1/2" Collector
  • FREE

    1 Product