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The engineers at FAST teamed up with the airflow specialists at RHS to develop a 3-piece, polymer intake manifold. They are constructed from a proprietary advanced polymer material that offers a host of benefits over aluminum aftermarket intakes, including lighter weight and improved strength and heat dissipating characteristics. While they feature a 102mm air inlet that is perfectly suited to the FAST Big Mouth 102mm throttle body, they can also be used with stock or aftermarket 90mm or 92mm throttle bodies. Other features include integrated nitrous bungs and perfect bolt-on fitment that allows for the use of factory accessories without modifications or clearance concerns. FAST LSXR intake manifolds' 3-piece modular design allows for easy disassembly and porting. This new design gives you the ability to remove individual runners from the manifold for modification.
( 26 )
$450.95
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$1,496.95
These FAST LSX intake manifolds are the only 3-piece Gen III composite manifolds proven to deliver increased performance without compromising bottom-end drivability or high-rpm horsepower. They easily bolt onto GM Gen III (LS1, LS2, and LS6) engines and are designed to work with the 92mm FAST Big Mouth throttle body. The new stylish black intake manifolds deliver terrific performance right out of the box and can be ported by the customer for even more flow. As requested by previous LSX customers, the FAST LSX intake manifolds feature the added benefits of corrosion-free stainless steel assembly bolts, an improved throttle body sealing flange, and O-ring gasket and threaded insert throttle body mounts that provide increased durability.
( 5 )
$1,222.95
Are you looking for a high-flow billet throttle body? The FAST engineering team used the latest computer modeling software and real-world testing to produce these throttle bodies, which yield the maximum flow per square inch of cross-sectional area. All FAST throttle bodies are machined from super-strong 6061-T6 billet aluminum in precision CNC machining centers for consistent quality and light weight.
( 3 )
$735.95
FAST LSXRT intake manifolds are designed specifically for GM truck engines (4.8L, 5.3L, and 6.0L) and LS1, LS2, and LS6 race applications where hood clearance is not a concern. FAST LSXRT 102mm intake manifolds follow the path chartered by the original FAST LSX Gen III intakes by featuring a modular design that allows for easy porting and disassembly and a runner design that yields an incredible 25 peak horsepower gain over the stock intake (on a stock 6.0L engine with a Big Mouth 102mm throttle body). Similar to the LSXR 102mm intake manifold for cars, the LSXRT features the ability to remove individual runners for modification. LSXRT's are constructed from a proprietary precision injection molded polymer which offers many benefits, including lighter weight, greater strength and lower heat soak propensity. While they feature a 102mm air inlet that was designed for the FAST Big Mouth 102mm throttle body, they can also be used with stock 90mm or aftermarket 92mm throttle bodies (78mm three-bolt throttle bodies require an adapter). Other features include integrated nitrous bungs and precise bolt-on fit that permits the use of factory accessories and OEM fuel/emission connections without adjustments or clearance issues. Some GM truck models may require the FAST 92mm or 102mm throttle body.
( 10 )
$1,269.95
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$1,467.95
FAST Big Mouth LT throttle bodies are cost-effective and stylish. If you don't want to go billet or can't afford it, these throttle bodies are the perfect choice for a variety of applications. An enlarged bore allows for increased airflow to support your higher horsepower, a progressive throttle pulley enhances drivability--especially at low throttle--and a double return spring provides a solid feel and increased safety. Here's an excellent alternative with all of the same features as their billet bodies--FAST Big Mouth LT throttle bodies with black wrinkle powdercoating.
( 9 )
$223.95
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$346.95
FAST LSX high-flow billet fuel rails feature a larger internal diameter that is designed to dampen the pulses and provide increased fuel volume, ensuring that your fuel injectors never run dry. They are manufactured from high-strength billet aluminum and are red anodized for maximum durability. These fuel rails include aluminum black anodized -8 AN fittings and "super-seal" O-rings that are component-matched to maximize fuel distribution. Upgrade your fuel system while adding some horsepower with these FAST LSX high-flow billet fuel rails.
( 29 )
$248.95
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$297.95
FAST LSXR OEM fuel rail kits will help maintain optimum fuel flow to your EFI system. They are designed for use with the FAST 102mm intake manifolds and include all fittings and attachments for a direct bolt-on fit.
( 5 )
$369.95
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$376.95
The FAST LSXHR intake manifolds are available for LS3 rectangular port applications, as well as LS7 raised rectangular port applications. These units are the industry's first polymer tunnel ram-style intake manifolds—and are ideal for generating maximum power in boosted and naturally aspirated engines. Order the model designed for your application. Features include: * Standard "tall" stacks are interchangeable with separately purchased "medium" and "short" stacks to find the most powerful combination * Polymer construction is lightweight and high strength to eliminate power-robbing heat soak commonly found in aluminum intake manifolds * Average 30 hp gain between 5,000 and 7,500 rpm over competitors' high-ram intake manifolds * Rated for up to 45 psi of continuous pressure * Compound fuel injector angle aims spray pattern for ideal atomization, resulting in maximum power production and superior drivability * Reversible top allows for forward- or firewall-facing throttle body installations * Two nitrous nozzle bosses per runner for clean and easy direct port system installations * 103mm throttle body opening can be ported to 105mm
( 7 )
$1,222.95
Keep your intake manifold sealed from contaminants with FAST LSX intake manifold seals. They are designed to replace your existing O-ring style port seals. They are available individually or in sets of eight.
( 31 )
$10.95
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$81.95
FAST LSXR LS3/LS7 fuel injector spacers are designed to extend your short OEM fuel injectors to the same length as the longer-style injectors. These kits include spacers and O-rings.
( 18 )
$55.95
FAST throttle body seals are made from high-quality buna rubber for a tight seal. When it's time to replace your throttle body seals, FAST replacement seals are a good way to go.
( 10 )
$14.95
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$20.95
FAST offers intake manifold seals for a variety of Chevrolet cars and trucks from the 1990s and up. These replacements are designed to ensure that the upper shell of your LSX, LSXR, or LSXRT manifold seals properly to the lower shell. The rope-like seals are made from original materials and specs to ensure a proper fit and leak-free performance. Order the seal recommended for your year/make and engine application.
( 10 )
$20.95
FAST intake manifold hardware kits come complete for specific FAST intake manifolds. The kits are made from stainless steel for longevity and have an Allen head design for optimal bolt head clearance for installation.
( 2 )
$61.95
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$173.95
FAST XR Series coils offer 15 to 20 percent more spark energy than stock coils. They are constructed from premium, ultra-pure copper alloy windings, resulting in firing performance approaching up to 50,000 peak volts. Tested to 8,000+ rpm and almost 1,500 hp, these ignition coils have been proven to perform in some of the harshest street and race engine environments. Designed for all popular engine sizes, the FAST XR Series coils are ideal for any street or racing application where reliable, powerful ignition output is needed.
( 8 )
$71.95
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$427.95
Control your idle speed with a little help from FAST idle air control motors. They allow the ECU system to determine the engine idle speed by controlling the airflow around the throttle body blades.
( 7 )
$156.95
FAST LSX intake manifold has revolutionized the performance of the GM LS-engine world by delivering increased power, versatility, and lightweight. The release of FAST LSX LS1 EFI fuel line conversion kits make it easy to take advantage of the power benefits of the LSX manifolds while using the FAST fuel rails to further enhance fuel delivery. Two kits are available, with or without the inline fuel pressure gauge, along with complete instructions to make installation a snap. FAST LSX LS1 EFI fuel line conversion kits include all of the fuel line parts, consisting of the rear crossover line, the main fuel supply line and the push connect fitting and plug to convert the factory 3/8 in. fuel line to -6AN lines. The FAST LSX LS1 EFI fuel line conversion Kits with the in-line fuel pressure gauge features a 1 1/2 in. diameter midnight silver encased, 0 to 100 psi liquid-filled gauge with a black face and easy-to-read white indicator needle. The FAST fuel rails must be purchased separately.
( 8 )
$173.95
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$208.95
FAST MAP sensors, by monitoring intake manifold vacuum, measure the amount of load being placed on the engine. They relay engine load output to the ECU, which in turn adjusts fueling for optimum performance and economy. Choose between 1-bar, 2-bar, 3-bar, and 5-bar MAP sensors.
( 10 )
$69.95
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$131.95
FAST throttle body adapter plate kits are designed to allow you to use a stock throttle body with a FAST intake, or a FAST throttle body with a stock intake. These throttle body adapters are constructed from durable aluminum and are offered for a choice of configurations.
( 4 )
$69.95
FAST throttle position sensors are designed to bolt onto the throttle blade shaft and relay throttle opening/closing information to the system ECU. These throttle position sensors are constructed from highly conductive, plastic-resistance material with a "sensitive" rotator for accurate throttle position measurement.
( 4 )
$49.95
FAST fuel injector seal and adapter kits ensure your fuel injectors are properly installed and seated in the intake manifold. They're designed specifically for FAST injectors. Brace/seat/install your injectors correctly with FAST seal and adapter kits.
( 2 )
$20.95
FAST TPS adapter harnesses relay throttle opening/closing information to the system's ECU by plugging into the throttle blade shaft. They're made of high-resistance material and have a rotator for accurate throttle position measurement. Models are available for Chevy LS or early-to-late GM TPS applications.
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$18.95
FAST makes it easy to keep your LSXR intake manifold in perfect working condition. FAST provides all of the necessary replacement parts you may need for regular service work or to repair unforeseen damage—including these LSXR intake manifold purge fittings. Order the components needed to maintain your application.
Not Yet Reviewed
$19.95
Sturdy up your fuel rails! Whether you are building a custom fuel system or just updating your current system, FAST fuel rail mounting brackets allow you to bolt up your fuel rails quickly and easily. FAST is a leading developer of electronic fuel injection systems for the performance aftermarket.
( 4 )
$58.95
To properly fit your impressive FAST LSXRT intake manifold on your truck, you may need one of their fuel rail mounting adapter kits. Mating the intake to your stock round plastic or square metal-style fuel rails will flow easier with these helpful conversions. They contain the components and hardware needed to modify your stock rails for installation of the intake manifold. Individual parts, such as a mounting bracket, or the complete fuel rail kits are available. The best fitment produces better results; set up your LSXRT intake manifold with FAST fuel rail mounting kits.
( 1 )
$20.95
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$86.95
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