Doug Thorley Headers

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Doug Thorley Headers

About Doug Thorley Headers

DOUG THORLEY HEADERS, an "all American made" company, has been in business for 50 years producing some of the world's best headers. DOUG THORLEY HEADERS is world famous for the invention of the tri-y header and for ease of installation. DOUG THORLEY HEADERS also introduced a new line of hdx –series of headers that are super heavy duty and specifically designed for those who have motor homes, trucks and off road vehicles that are susceptible to extreme conditions. DOUG THORLEY HEADERS also produces the finest SANRAIL header-exhaust available anywhere.

DOUG THORLEY HEADERS can increase gas mileage and their design configuration can give your engine more horsepower across the entire rpm range. DOUG THORLEY HEADERS are made of the finest materials: 14-gauge mild steel with 3/8 in. thick flanges and 5/16 in. collector rings and with a nickel chrome plated finish for a great look. All our coated products are coated inside and out. 3 layers inside, 5 layers and polish outside. DOUG THORLEY HEADERS have an O-ring welded into the flange and a high-temperature gasket to prevent leaks.

Their illustrious history in the field of designing and developing performance headers for the automotive industry is a testament to the fact that the DOUG THORLEY line of headers is nonpareil. The ever growing internationally competitive market demands that a company stay ahead of the game in both innovation and quality of product and DOUG THORLEY has managed to do just that because they know how important this investment is to you and they want to give you the best. The importance of the role in the functioning of your car’s engine is always taken into consideration when they design and manufacture their headers and their aim is to help increase the speed at which exhaust gases leave your engine. The DOUG THORLEY long tube headers for your Frontier, 4-Runner, Tacoma, Pathfinder, XTERRA, Firebird, Grand Prix, GTO, Lemans, Land Cruiser, Camaro, CHEVELLE, Nova and El Camino and available on the LMPERFORMANCE web site should afford you an increase in horsepower at uninterrupted high revolutions and they are the quintessential header for racing applications. And if you would rather go the route of the DOUG THORLEY SHORTIE headers then LMPERFORMANCE can help you there too and since the DOUG THORLEY SHORTIE headers take up less room in the engine compartment and are the better choice for lowered vehicles they may be just right for you, especially since they generally work with your existing exhaust components and still provide significant gains in power. LMPERFORMANCE also carries the inimitable tri-y header, one of DOUG THORLEY’s most efficient headers, yet one that still improves horsepower significantly and the incredible WORX series headers for your Ford Mustang with its emphasis on racing and with maximum power gain of more than 25 horsepower and greater efficiency. In your search for the ideal header you won’t go wrong with DOUG THORLEY and LMPERFORAMANCE for exceptional quality.

LMPerformance.com carries DOUG THORLEY HEADERS, DOUG THORLEY SHORT HEADERS, DOUG THORLEY EXHAUST SYSTEMS, and DOUG THORLEY Y-PIPES for your Buick, Chevy, Ford, GMC, Hummer,Infinity, Jeep, Kia, Lexus, Nissan, Pontiac, Suzuki and Toyota at a very competitive price and, of course with the customer service you deserve.

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