Performance Auto Parts for LS Swaps, Muscle Cars & Modern Builds

Shop thousands of in-stock performance parts from trusted brands—engine upgrades, suspension, exhaust, fuel systems, and more. Fast shipping and real-world support from fellow car enthusiasts.

Speed Engineering Silverado & Sierra 1 7/8" Longtube Headers 2007-2013 25-1009

$319.99
25-1009
.HeadersManifolds All Headers & Manifolds Speed Engineering
Speed Engineering Silverado & Sierra longtube headers are made out of 304 stainless steel and offer great quality, performance, and affordability. Our Silverado &...

Speed Engineering Gen 4 Camaro & Firebird 1 3/4" Longtube Headers 1993-1997 (GEN 2 LT1 ENGINES) 25-1019

$249.99
25-1019
.HeadersManifolds All Headers & Manifolds Speed Engineering
Speed Engineering Gen 4 Camaro & Firebird longtube headers are made out of 304 stainless steel and offer great quality, performance, and affordability. Our...

Speed Engineering Gen 5 Camaro 1 7/8" Longtube Headers 2010-2015 (LS3 L99 ENGINES) 25-1017

$319.99
25-1017
.HeadersManifolds All Headers & Manifolds Speed Engineering
Speed Engineering Gen 5 Camaro longtube headers are made out of 304 stainless steel and offer great quality, performance, and affordability. Our Camaro longtube...

Speed Engineering ARP 12pt Stainless Header Bolts & Washers (POLISHED) 26-1064

$46.99
26-1064
All Headers & Manifolds Speed Engineering
Headers can represent a sizable investment, so you'll want to keep them securely attached. In addition, exhaust leaks can cost you power and even...

Speed Engineering Gen 6 Camaro 2" Longtube Headers 2016+ (LT1 LT4 ENGINES) 25-1061

$499.99
25-1061
.HeadersManifolds All Headers & Manifolds Speed Engineering
Speed Engineering Gen 6 Camaro longtube headers are made out of 304 stainless steel and offer great quality, performance, and affordability. Our Camaro longtube...

Speed Engineering Spark Plug Wire Fire Sleeves (HEAT SHIELD COVER) 26-1075 ETA 4/30/25

$18.99
26-1075
.Sparkplugwires All Speed Engineering
ETA 4/30/25 Spark Plug Wire Fire Sleeves (Heat Shield Cover) Features include: 8 Qty 6" Length 0.86" ID Heat Rated for 1200°F-1800°F "Continuous use"...

Speed Engineering C10 Truck True Dual Exhaust Kit 1973-1987 (LS & LT CONVERSION SWAP) AXLE EXIT 25-1060

$399.99
25-1060
.ExhaustSystemsKits All Header Back Speed Engineering
NOT AVAILABLE TO CALIFORNIA Speed Engineering true dual exhaust is made out of 304 stainless steel and offers great quality, performance, and affordability. Our...

Speed Engineering Pontiac GTO X-Pipe Kit 2004-2006 (LS1, LS2 ENGINES) 25-1051

$219.99
25-1051
.HPipeYpipeXPipeMergePipes All Speed Engineering X Pipes
Speed Engineering X-Pipes are made out of 304 stainless steel and offer great quality, performance, and affordability. Our X-Pipes are mandrel bent, tig welded,...

Speed Engineering Silverado & Sierra 1 7/8" Longtube Headers 1999-2006 25-1011

$319.99
25-1011
.HeadersManifolds All Headers & Manifolds Speed Engineering
NOT AVAILABLE TO CALIFORNIA Speed Engineering Silverado & Sierra longtube headers are made out of 304 stainless steel and offer great quality, performance, and...

Speed Engineering C6 Corvette 2" Longtube Headers 2005-2013 (LS2 LS3 LS6 LS7 ENGINES) 25-1068

$449.99
25-1068
.HeadersManifolds All Headers & Manifolds Speed Engineering
Speed Engineering Corvette longtube headers are made out of 304 stainless steel and offer great quality, performance, and affordability. Our Corvette longtube headers are...

FULL KIT Speed Engineering Silverado & Sierra 1 7/8" Longtube Headers 1999-2006 25-1011

$514.96
25-1011KIT
.HeadersManifolds All Headers & Manifolds Speed Engineering
NOT AVAILABLE TO CALIFORNIAThis kit includes the parts required and recommended parts to install longtube headers in your 99-06 GMT800 truck and connect them...

Speed Engineering LS Swap 1 7/8" Longtube Headers FOX BODY 1979-1993 & 1994-2004 FORD MUSTANG 25-1028

$329.99
25-1028
.HeadersManifolds All Headers & Manifolds Speed Engineering
NOT AVAILABLE TO CALIFORNIA Speed Engineering LS Swap Longtube headers are made out of 304 stainless steel and offer great quality, performance, and affordability....

Speed Engineering LS Swap Shorty Headers S10 & S10 Blazer 1982-2004 (LS1, LS2, LS3, LS6, LSA) 25-1039

$199.99
25-1039
.HeadersManifolds All Headers & Manifolds Speed Engineering
NOT AVAILABLE TO CALIFORNIA Speed Engineering LS swap shorty headers are made out of 304 stainless steel and offer great quality, performance, and affordability....

Speed Engineering LS Swap 1 7/8" Longtube Headers GEN 3 CAMARO FIREBIRD 1982-1992 LS1 LS2 LS3 LS6 LSA 25-1035

$329.99
25-1035
.HeadersManifolds All Headers & Manifolds Speed Engineering
NOT AVAILABLE TO CALIFORNIA Speed Engineering LS Swap Camaro & Firebird Longtube headers are made out of 304 stainless steel and offer great quality,...

Speed Engineering Silverado, Sierra, Tahoe, Yukon, Escalade Shorty Headers 2014-2018 (5.3L, 6.2L) 25-1040

$199.99
25-1040
.HeadersManifolds All Headers & Manifolds Speed Engineering
NOT AVAILABLE TO CALIFORNIASpeed Engineering shorty headers are made out of 304 stainless steel and offer great quality, performance, and affordability. Our headers are...

Speed Engineering 2014-2019 Silverado/Sierra/SUV Y-Pipe (4.8L, 5.3L, 6.2L) 25-1038 ETA 5/20/25

$169.99
25-1038
.HPipeYpipeXPipeMergePipes All Speed Engineering Y Pipes
ETA 5/20/25Speed Engineering Y-Pipes are made out of 304 stainless steel and offer great quality, performance, and affordability. Our Y-Pipes are mandrel bent, tig...

Speed Engineering C6 Corvette X-Pipe Kit 2005-2013 (LS2, LS3, LS7 ENGINES) 25-1053

$229.99
25-1053
.HPipeYpipeXPipeMergePipes All Speed Engineering X Pipes
NOT AVAILABLE TO CALIFORNIASpeed Engineering X-Pipes are made out of 304 stainless steel and offer great quality, performance, and affordability. Our X-Pipes are mandrel...

Speed Engineering Gen 4 Camaro & Firebird 1 7/8" Longtube Headers 1998-2002 (LS1 ENGINES) 25-1020

$309.99
25-1020
.HeadersManifolds All Headers & Manifolds Speed Engineering
Speed Engineering Gen 4 Camaro & Firebird/Trans Am longtube headers are made out of 304 stainless steel and offer great quality, performance, and affordability....

Speed Engineering "PAIR" 12" O2 Extension (2016+ CAMARO & 2016-19 CTS V) 31-1007

$39.99
31-1007
All Headers & Manifolds Speed Engineering
12" O2 Extension (2016+ Camaro & 2016-19 CTS V) "SOLD IN PAIR" (Warning) This is a RACE ONLY product manufactured and sold for installation on vehicles...

FULL KIT Speed Engineering Gen 5 Camaro 1 7/8" Longtube Headers 2010-2015 (LS3 L99 ENGINES) 25-1017

$464.95
25-1017KIT
.HeadersManifolds All Headers & Manifolds Speed Engineering
NOT AVAILABLE TO CALIFORNIAThis kit includes the parts required and recommended parts to install longtube headers in your 10-15 Camaro and connect them to...

FULL KIT Speed Engineering Silverado & Sierra 1 3/4" Longtube Headers 2007-2013 25-1013

$504.96
25-1013KIT
.HeadersManifolds All Headers & Manifolds Speed Engineering
NOT AVAILABLE TO CALIFORNIAThis kit includes the parts required and recommended parts to install longtube headers in your 07-13 GMT900 truck and connect them...

FULL KIT Speed Engineering Silverado & Sierra 1 3/4" Longtube Headers 1999-2006 25-1012

$494.96
25-1012KIT
.HeadersManifolds All Headers & Manifolds Speed Engineering
NOT AVAILABLE TO CALIFORNIAThis kit includes the parts required and recommended parts to install longtube headers in your 99-06 GMT800 truck and connect them...

Speed Engineering Universal 3" Exhaust Builder Kit "Deluxe" (304 Stainless) LS Engine Swap 25-1112

$299.99
25-1112
All Speed Engineering
Speed Engineering Builder Kits are made out of 304 stainless steel and offer great quality, performance, and affordability. Our Builder Kits are mandrel bent,...

Speed Engineering LS Swap Camaro (1967-1969) & Nova (1968-1974) Longtube Headers (LS1 LS2 LS3 LS6 LSA) 25-1027

$329.99
25-1027
.HeadersManifolds All Speed Engineering
NOT AVAILABLE TO CALIFORNIA Looking to swap a newer LS series engine into a 1967-1969 Camaro, or 1968-1974 Nova.. Speed Engineering LS swap longtube...

Speed Engineering LS Swap 1 7/8" Longtube Headers OBS Silverado Sierra C1500 1988-1998 2WD (LS1 LS2 LS3 LS6 LSA) 25-1137

$349.99
25-1137
.HeadersManifolds All Speed Engineering
NOT AVAILABLE TO CALIFORNIA  Speed Engineering LS Swap Longtube headers are made out of 304 stainless steel and offer great quality, performance, and affordability....

Speed Engineering Silverado & Sierra True Dual Exhaust System 1999-2019 (SINGLE CAB) "AXLE EXIT" 25-1006 ETA 4/30/25

$599.99
25-1006-1
.ExhaustSystemsKits All Header Back Speed Engineering
ETA 4/30/25 Speed Engineering true dual exhaust is made out of 304 stainless steel and offers great quality, performance, and affordability. Our exhaust is...

Speed Engineering "PAIR" Silverado & Sierra 12" O2 Extensions (2016+ GM TRUCK & SUV) 31-1006

$39.99
31-1006
All Speed Engineering Wiring Harnesses
Silverado & Sierra 12" O2 Extension (2016+ GM Truck & SUV) "SOLD IN PAIR" (Warning) This is a RACE ONLY product manufactured and sold for installation...

Speed Engineering C7 Corvette 1 7/8" Longtube Headers 2014-2019 (LT1 LT4 ENGINES) 25-1044

$449.99
25-1044
.HeadersManifolds All Headers & Manifolds Speed Engineering
Speed Engineering Corvette longtube headers are made out of 304 stainless steel and offer great quality, performance, and affordability. Our Corvette longtube headers are...

Speed Engineering "PAIR" LS1, LT1 Camaro & Firebird Black Square O2 Extension (24" LENGTH) 31-1001

$39.99
31-1001
All Speed Engineering Wiring Harnesses
Oxygen sensor extensions allow for easy relocation of oxygen sensors. This is perfect for the installation of headers which require the oxygen sensor be...

Speed Engineering Gen 4 Camaro & Firebird 1 3/4" Longtube Headers 1998-2002 (LS1 ENGINES) 25-1010

$279.99
25-1010
.HeadersManifolds All Headers & Manifolds Speed Engineering
NOT AVAILABLE TO CALIFORNIASpeed Engineering Gen 4 Camaro & Firebird/Trans Am longtube headers are made out of 304 stainless steel and offer great quality,...

Speed Engineering "PAIR" LS2 & LS3 Triangle O2 Extension (24") (C5/C6 Corvette, 2010-15 Camaro, 2014-18 SS) 31-1003

$39.99
31-1003
All Speed Engineering Wiring Harnesses
Oxygen sensor extensions allow for easy relocation of oxygen sensors. This is perfect for the installation of headers which require the oxygen sensor be...

Speed Engineering 2010-2015 Camaro Off-Road Connection Pipes 25-1024

$69.99
25-1024
.HPipeYpipeXPipeMergePipes All Connecting Pipes Speed Engineering
Speed Engineering off-road connection pipes are made out of 304 stainless steel, and allow our headers to connect to the factory exhaust system. Note: Includes...

Speed Engineering LS Swap Mid-Length 1 3/4" Headers Universal (LS1 LS2 LS3 LS6 LSA) 25-1066

$259.99
25-1066
.HeadersManifolds All Speed Engineering
NOT AVAILABLE TO CALIFORNIA Speed Engineering LS Swap mid-length headers are made out of 304 stainless steel and offer great quality, performance, and affordability....

Speed Engineering LS Spark Plug Wires Car, Truck, & SUV 12" Length "RED" 26-1002

$69.99
26-1002
.Sparkplugwires All Speed Engineering
Speed Engineering 45 degree angled spark plug wires. We offer our own line of quality spark plug wires produced here in the U.S. These...

Speed Engineering Spark Plug Wires Car, Truck, & SUV 10" Length "RED" 26-1001

$69.99
26-1001
.Sparkplugwires All Speed Engineering
Speed Engineering 45 degree angled spark plug wires. We offer our own line of quality spark plug wires produced here in the U.S. These...

Speed Engineering Silverado & Sierra Twin Turbo Kit 1999-2006 (4.8L, 5.3L, 6.0L) 32-TwinKit-9906

$2,999.99
32-TwinKit-9906
.TurbochargersSuperchargers All Speed Engineering Turbo Kits
Speed Engineering turbo systems: Our goal with these kits was to make the most complete, best fitting, most versatile turbo system on the market...
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