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The same way Summit Racing offers more than just racing parts, Doug Thorley Headers makes much more than just headers. Doug Thorley manufactures a full line of exhaust products, including complete exhaust systems, free-flowing Y-pipes, tailpipes, and much more. And yes, you’ll find legendary Thorley headers, too. We’ve got full-length, tri-Y, block hugger, and shorty headers to meet your torque and power needs. Unleash the beast under your hood—shop Doug Thorley Headers exhaust parts at Summit Racing today!
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Backed by 40-plus years of knowledge and experience, Thorley headers are designed to outflow your stock exhaust manifolds. Th...
Thorley headers are designed to outflow your stock exhaust manifolds. These headers increase gas mileage and give your ...
These Doug Thorley header gaskets are custom-made from a high-temperature material that withstands heat up to ...
These collector gaskets are the only ones designed exclusively for use with Doug Thorley headers. Manufactu...
Doug Thorley exhaust systems are the best choice to wake up the performance and looks of your vehicle, while providin...
Install your Thorley headers and keep your air conditioning with these Doug Thorley air conditioning bracke...
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