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 for sale 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 for sale, 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.
Doug Thorley Chevrolet Camaro SS 3.6L-6.2L Muffler Delete Tail Pipes; 2010-2013
Doug Thorley Headers
CATALOG # 00560576
Model #: 85424
$286.84 Starting at $25/month
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Doug Thorley Nissan Xterra 4.0L 2/4wd (Off-Road "Race" Use Only) Performance "B" Pipes; 2005-2012
Doug Thorley Headers
CATALOG # 00560585
Model #: 83206-B
$205.90 Starting at $18/month
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Doug Thorley Nissan Frontier 4.0L 2/4wd (Off-Road "Race" Use Only) Performance "B" Pipes; 2005-2012
Doug Thorley Headers
CATALOG # 00572437
Model #: 83206-B
$205.90 Starting at $18/month
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Doug Thorley Lexus Lx470 100-Series 4.7L 2/4wd (Stainless Steel) Cat-Back Exhaust; 1999-2005
Doug Thorley Headers
CATALOG # 00560584
Model #: 89248
$484.22 Starting at $43/month
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Doug Thorley Nissan Frontier 4.0L 2/4wd Cat-Back Exhaust; 2005-2012
Doug Thorley Headers
CATALOG # 00560568
Model #: 83205
$407.54 Starting at $36/month
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Doug Thorley Headers
CATALOG # 00560756
Model #: THY-555Y-C
$505.52 Starting at $45/month
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Doug Thorley Toyota Pickup Truck 4runner 3.0L 4wd Only 3:1 Long Tube Headers; 1988-1995
Doug Thorley Headers
CATALOG # 00560722
Model #: THY-505-C
$734.14 Starting at $65/month
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Doug Thorley Impala SS 5.3L Shortie Headers w/ Y-pipe; 2006-2009
Doug Thorley Headers
CATALOG # 00560657
Model #: THY-340-C
$891.76 Starting at $79/month
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Doug Thorley Nissan Juke 1.6L Turbo (Awd Only) Axle-Back Exhaust; 2011-2013
Doug Thorley Headers
CATALOG # 00560573
Model #: 83209
$318.00 Starting at $28/month
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Doug Thorley Headers
CATALOG # 00560763
Model #: THY-561-SS-C
$697.22 Starting at $61/month
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Doug Thorley Ford Motorhome F250/F350 Pickup Truck 460 F.I. Tri-Y Headers; 1988-1997
Doug Thorley Headers
CATALOG # 00560597
Model #: THY-214Y-FI-C
$752.60 Starting at $66/month
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Doug Thorley Nissan Frontier Equator Navara 4.0L 2/4wd ("Race" Use Only) Shortie Headers; 2005-2012
Doug Thorley Headers
CATALOG # 00560716
Model #: THY-470-L-C
$477.12 Starting at $42/month
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Doug Thorley Nissan Xterra 4.0L 2/4wd Shortie Headers; 2005-2012
Doug Thorley Headers
CATALOG # 00560715
Model #: THY-470-C
$468.60 Starting at $41/month
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Doug Thorley Pontiac Grand Prix Gxp 5.3L Shortie Headers w/ Y-pipe; 2005-2008
Doug Thorley Headers
CATALOG # 00560659
Model #: THY-340-C
$891.76 Starting at $79/month
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Doug Thorley Pontiac G8 GT G8 Gxp / Holden Commodore 6.0L ("Race" Use Only) Tri-Y Headers; 2008-2010
Doug Thorley Headers
CATALOG # 00560652
Model #: THY-333Y-C
$707.16 Starting at $62/month
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Doug Thorley Chevrolet Silverado 4.8L-6.2L ("Race" Use Only) Tri-Y Headers; 1999-2012
Doug Thorley Headers
CATALOG # 00560639
Model #: THY-310Y-1-C
$823.60 Starting at $73/month
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Doug Thorley Nissan Xterra 4.0L 2/4wd Cat-Back Exhaust; 2005-2012
Doug Thorley Headers
CATALOG # 00560569
Model #: 83206
$447.30 Starting at $39/month
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Doug Thorley Jeep Cherokee 4.0L (Stainless Steel) Tri-Y Header; 1991-1999
Doug Thorley Headers
CATALOG # 00560589
Model #: HDX-634Y
$545.28 Starting at $48/month
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Doug Thorley Toyota 4runner 3.4L 2/4wd (W/O External Egr Tube) Shortie Headers; 1995-2004
Doug Thorley Headers
CATALOG # 00560729
Model #: THY-507-C
$758.28 Starting at $67/month
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Doug Thorley Headers
CATALOG # 00560724
Model #: THY-506Y-1-C
$481.38 Starting at $42/month
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Doug Thorley Toyota 4runner 3.4L 2/4wd (W/ External Egr Tube) Shortie Headers; 1995-2004
Doug Thorley Headers
CATALOG # 00560730
Model #: THY-507-S-C
$873.30 Starting at $77/month
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Doug Thorley Headers
CATALOG # 00560736
Model #: THY-511-C
$332.28 Starting at $29/month
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Doug Thorley Headers
CATALOG # 00560738
Model #: THY-511Y-1-C
$333.70 Starting at $29/month
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Doug Thorley Toyota Tacoma Hilux Prado 4.0L 2/4wd (Weld-On Outlet) Shortie Headers; 2005-2011
Doug Thorley Headers
CATALOG # 00560742
Model #: THY-515-1-C
$444.46 Starting at $39/month
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Doug Thorley Jeep Grand Cherokee 5.2L-5.9L 2/4wd Tri-Y Headers; 1993-1999
Doug Thorley Headers
CATALOG # 00560768
Model #: THY-630Y-C
$913.06 Starting at $80/month
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Doug Thorley Suzuki Samurai 1.3L/ 1.6L (8 Valve) Tri-Y Header; 1984-1995
Doug Thorley Headers
CATALOG # 00560771
Model #: THY-700Y-SS
$386.24 Starting at $34/month
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Doug Thorley Headers
CATALOG # 00560579
Model #: 89227
$406.12 Starting at $36/month
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Doug Thorley Chevrolet Silverado 4.8L-6.2L Shortie Headers; 2002-2012
Doug Thorley Headers
CATALOG # 00560627
Model #: THY-309-C
$505.52 Starting at $45/month
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Doug Thorley Headers
CATALOG # 00560651
Model #: THY-324Y-C
$654.62 Starting at $58/month
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Doug Thorley Chevrolet Colorado 5.3L ("Race" Use Only) Tri-Y Headers; 2009-2012
Doug Thorley Headers
CATALOG # 00560665
Model #: THY-344Y-C
$735.56 Starting at $65/month
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Doug Thorley Headers
CATALOG # 00560719
Model #: THY-481Y-LS-C
$717.10 Starting at $63/month
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Doug Thorley Nissan Frontier 3.0-3.3L 2/4wd 3:1 Long Tube Headers; 1998-2004
Doug Thorley Headers
CATALOG # 00560710
Model #: THY-465-L-C
$494.16 Starting at $44/month
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Doug Thorley Nissan Pathfinder 3.0-3.3L 2/4wd 3:1 Long Tube Headers; 1998-2004
Doug Thorley Headers
CATALOG # 00560711
Model #: THY-465-L-C
$494.16 Starting at $44/month
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Doug Thorley Chevrolet Nova 265-400 Tri-Y Headers; 1968-1974
Doug Thorley Headers
CATALOG # 00560702
Model #: THY-375Y-C
$800.88 Starting at $71/month
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Doug Thorley Nissan Pathfinder 4.0L 2/4wd Shortie Headers; 2005-2012
Doug Thorley Headers
CATALOG # 00560714
Model #: THY-470-C
$468.60 Starting at $41/month
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