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In the past year, the Doug Thorley customer base has grown by leaps and bounds. While we remain world famous for the invention of the tri-y header and ease of installation, we have continued to expand our product line to include the latest models. In addition, we are introducing our new line of hdx –series of headers. These headers are super heavy duty and specifically designed for those who have motor homes, trucks and off road vehicles that are susceptible to extreme conditions. Also, we now produce and sell the finest sanrail header-exhaust that's available anywhere. Doug thorley headers was on three speed channel programs last year.
Since Doug Thorley Headers invented the Tri-Y header, we have become legendary in the automotive aftermarket for performance enhancement and excellent quality. Over the past 50 years, we have advanced our reputation as a technological leader through constant innovation, refinement and interaction with the racing industry, our customers and our suppliers. We feel our commitment is vital to developing long term relationships and maintaining our reputation as an industry leader. We have backed up our commitment by investing three million dollars in state of the art manufacturing facilities and with five million dollars of inventory. After 50 years, Doug Thorley Headers is still 100% American made.
Doug Thorley Chrome headers are designed to prohibit initial rust and corrosion. They are not intended to be "show chrome" accessories, as it will discolor upon initial fire-ups, but this is normal. Chrome headers still have a limited lifetime warranty against manufacturer's defects and workmanship. Doug Thorley's Ceramic-Thermal coating protects your header against the elements and can take temperatures up to 1,400 degrees Fahrenheit to maximize the performance of your engine. This coating keeps heat inside the tubing, thus promoting velocity while absorbing up to 40% of the engine temperature. This keeps your engine running cooler and helps in all areas where heat is the enemy. Doug Thorley offers several header designs along with their coatings including block hugger, long tube, shortie, and mid-length. All sizes come in Doug Thorley's Tri-Y design. The Tri-Y is designed to work with your specific engine's piston firing order to maximize power and torque.