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About Us

For over 50 years, Doug Thorley Headers has been an innovator in the automotive aftermarket. Driven by a passion for performance and superior quality, we are committed to developing 100% American-made products that will reliably deliver maximum horsepower and torque. Doug Thorley Headers has been pushing the limits of automotive technology since we first invented the Tri-Y header in 1958, and we do it all on American soil.

As we move into a new office and manufacturing facility, we will be working to expand our product line, improve our production capabilities and continue to find new ways to give our customers maximum power and value for their dollar. Our commitment to excellence is vital to developing and maintaining long-term relationships with our customers.

Every vehicle model is unique, and our R&D team is constantly working to provide a diverse range of products and applications to meet our customers’ needs. Whether you’re hauling an RV, building up a street rod, or just looking to get a little more punch out of your Smart Car, Doug Thorley Headers has the product to maximize horsepower and torque for your application.

For more than half a century, we have operated under the principles of meticulous attention to detail and unmatched craftsmanship while our experienced staff continues to lead the way in automotive performance. We thank our customers, employees, suppliers, and friends for helping us serve the automotive aftermarket since 1958 as we look forward to continuing our trendsetting tradition for many years to come.