Best Performance Headers

  Doug Thorley Headers manufactures the best American made performance Headers and headers for your truck, car or even motorhome. Contact us for pricing at: [email protected] Toll: [phone] Doug Thorley Headers 1280 Graphite Dr Corona, CA 92881. 

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Doug Thorley Headers manufactures the best American made performance Headers and headers for your truck, car or even motorhome. Contact us for pricing at: [email protected] Toll: [phone] Doug Thorley Headers 
1280 Graphite Dr.
Corona, CA 92881

Be sure to check out the GM Headers for all the hardware you’ll need to make your LS swap come together. 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.

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This complete header kit makes noticeable increases in the power output of your 3.4L Toyota. The kit includes ceramic coated long tube tri-y headers and a complete performance y-pipe kit routing exhaust gases all the way to your exhaust system. Insta

This complete header kit makes noticeable increases in the power output of your 3.4L Toyota headers. The kit includes ceramic coated long tube tri-y headers and a complete performance y-pipe kit routing exhaust gases all the way to your exhaust system.

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Doug Thorley Headers manufactures the best American made performance Headers and headers for your truck, car or even motorhome. Contact us for pricing at: [email protected] Toll: [phone] Doug Thorley Headers 
1280 Graphite Dr.
Corona, CA 92881

Doug Thorley Headers manufactures the best American made performance exhaust Headers and headers for your truck, car or even motorhome. Contact us for pricing at: [email protected] Toll: [phone] Doug Thorley Headers 
1280 Graphite Dr.
Corona, CA 92881

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Truck Headers

Backed by over 50 years of knowledge and experience, our headers (Truck Headers) are designed to outflow your stock exhaust manifolds by leaps and bounds. Tri-Y (or 4 into 2 into 1) style headers by design will increase the power of your motor across the widest RPM band possible.

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Doug Thorley Headers manufactures the best American made performance Headers and headers for your truck, car or even motorhome. Contact us for pricing at: [email protected] Toll: [phone] Doug Thorley Headers 
1280 Graphite Dr.
Corona, CA 92881

At Doug Thorley Headers, you can find Suzuki Headers at a great price. Check out our Suzuki Headers today! Shop now and enjoy our lowest price guarantee and access to the best brands in the industry!

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Best performance headers made in America. For questions on our top performer headers like the TRI-Y contact us at [email protected] Toll: [phone] Doug Thorley Headers 
1280 Graphite Dr.
Corona, CA 92881

Why the Tri-Y? Serious Horsepower that’s why! Invented by Doug Thorley Headers, the Tri-Y header is designed to match the synchronization of the engine firing order, thereby maximizing exhaust scavenging. This design creates the optimum torque and greatest horsepower gains in comparison to any other design.

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Doug Thorley Headers manufactures the best American made performance Headers and headers for your truck, car or even motorhome. Contact us for pricing at: [email protected] Toll: [phone] Doug Thorley Headers 
1280 Graphite Dr.
Corona, CA 92881

Backed by over 50 years of knowledge and experience, our headers are designed to outflow your stock exhaust manifolds rapidly. Tri-Y (or 4 into 2 into 1) style headers by design will increase the power of your motor (Motor Home Headers) across the widest RPM band possible, while increasing your gas mileage potential.

[dougthorleyheaders-blog]

Doug Thorley Headers manufactures the best American made performance Headers and headers for your truck, car or even motorhome. Contact us for pricing at: [email protected] Toll: [phone] Doug Thorley Headers 
1280 Graphite Dr.
Corona, CA 92881

Get the best deal for Lexus headers online selection at Doug Thorley Headers. 1999-05 Toyota Land Cruiser / Lexus LX470 4.7L V8 Cat-back Exhaust. TRUCKS. In-Stock ... 2003-04 Toyota 4Runner Stainless Steel Long Tube Tri-Y Headers.

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Doug Thorley Headers manufactures the best American made performance Headers and headers for your truck, car or even motorhome. Contact us for pricing at: [email protected] Toll: [phone] Doug Thorley Headers 
1280 Graphite Dr.
Corona, CA 92881

Chevy/GM 5.7L Vortec C1500 Truck Long Tube Tri-Y Chevy Headers ... 2002-2013 Chevy/GM 4.8-5.3L Silverado/Sierra Long Tube Tri-Y Headers. This complete header kit makes huge increases in power output of your LS based GM truck or SUV! Backed by over 50 years of knowledge and experience, our headers are designed to outflow your stock exhaust manifolds by leaps and bounds.

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Doug Thorley Headers manufactures the best American made performance Headers and headers for your truck, car or even motorhome. Contact us for pricing at: [email protected] Toll: [phone] Doug Thorley Headers 
1280 Graphite Dr.
Corona, CA 92881

Toyota Land Cruiser / Lexus LX470 4.7L V8 Cat-back Exhaust. TRUCKS ... 2003-04 Toyota 4 runner Stainless Steel Long Tube Tri-Y Headers. Get Toyota headers in cheap cost from Doug Thorley Headers.

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Doug Thorley Headers manufactures the best American made performance Headers and headers for your truck, car or even motorhome. Contact us for pricing at: [email protected] Toll: [phone] Doug Thorley Headers 
1280 Graphite Dr.
Corona, CA 92881

Doug Thorley Headers manufactures the best American made performance ... 1999-2004 Jeep headers Grand Cherokee WJ 4.7L Long Tube Headers w/ Y-pipe.

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These shortie headers are a fantastic way to work some extra horsepower out of your Dodge Headers.

These shortie headers are a fantastic way to work some extra horsepower out of your Dodge Headers. A simple bolt-on installation will have you back out on the road in no time towing better and getting where you're going a little faster. All American made, and backed by our lifetime warranty of course!

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Cat-back Exhaust System w/ Dual Side Exit (left & right) 2007-14 Toyota FJ Cruiser

This quality cat-back exhaust system utilizes our stainless steel straight thru performance muffler for maximum performance while directing sound out of the exhaust pipe instead of into the cab of your FJ Cruiser. There is no better complement to our headers (Lexus Headers) that our performance exhaust system!

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Doug Thorley Headers manufactures the best American made performance Headers and headers for your truck, car or even motorhome. Contact us for pricing at: [email protected] Toll: [phone] Doug Thorley Headers 
1280 Graphite Dr.
Corona, CA 92881

This quality cat-back exhaust system utilizes stainless steel tubing and out straight thru performance muffler for maximum power while directing sound out of the exhaust pipe instead of into the cab of your Frontier. There is no better complement to our nissan & vehicle headers than our performance exhaust system.

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Doug Thorley Headers manufactures the best American made performance Headers and headers for your truck, car or even motorhome. Contact us for pricing at: [email protected] Toll: [phone] Doug Thorley Headers 
1280 Graphite Dr.
Corona, CA 92881

Doug Thorley Headers manufactures legendary performance headers and exhaust systems with visionary designs, while providing excellent customer service and performance headers technical advice.

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Toyota Headers

We have got the lowest prices on Toyota Headers anywhere. Shop with us to enjoy even more savings with our discount deals and offers. We have worked very hard to earn this reputation, and we consider it our exclusive responsibility to uphold this reputation with our customers.

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Tri-Y Headers

Tri-Y headers system gives you high-flow header performance with a custom fit that means you don't have to sacrifice your power steering. Retain exhaust studs in the heads — no more breaking into water jackets!