Air/Fuel Delivery Parts for Carbureted & Fuel Injected Engines

Cram the right air/fuel ratio into your engine and you create incredible horsepower. Summit Racing has everything you need to find that mix, starting with carburetors...

Cram the right air/fuel ratio into your engine and you create incredible horsepower. Summit Racing has everything you need to find that mix, starting with carburetors for street to strip, plus intake manifolds ranging from stock-height replacements to hood-busting tunnel rams. If you’e ready to advance to fuel injection, we’ve got you covered with injectors, manifolds, fuel rails, sensors, and complete performance EFI conversion kits. We’ve also got cold air intakes, fuel pumps, fuel filters, superchargers, turbochargers, nitrous kits, methanol injection kits, hood scoops, and air filters—there’s no excuse for starving...

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Mikuni Pilot Jets

Highly developed engines use fuel more efficiently, but not if they're poorly tuned. Mikuni pilot jets are one piece of your tuning puzzle. Pilot jets are replaceable and the pilot air screw is adjustable. If the jet is too large or the air screw is in too far, then the air/fuel mixture may be too rich. That's one reason why Mikuni pilot jets come in different sizes. The brass pilot jets will deliver a precise amount of fuel so you can have your machine running perfectly. Don't waste time trying to do the impossible--replace your pilot jets and start having fun.

5.0 out of 5 stars ( 2 )

$8.50

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$21.99

Nic Woods Racing Long Pilot Carburetor Jets

Nic Woods Racing long pilot carburetor jets eliminate the need for the plastic extension tube and they will help with idle circuit fuel flow at the hit of the throttle. Perfect for stock float bowl or billet extended float bowls, they come in four popular sizes available individually or as a set. Each long pilot is clearly marked. For optimum tuning, try Nic Woods Racing long pilot carburetor jets.

5.0 out of 5 stars ( 1 )

$20.00

EBC Keihin Pilot Jets

EBC offers Keihin-style pilot jets for a variety of ATV and UTV applications. These brass carburetor replacement jets are available in multiple sizes to accommodate most off-road machines.

Not Yet Reviewed

$19.50

Pro-X Racing Parts Keihin Pilot Jet Assortment Kits

Whether you're rejetting for altitude changes, optimizing your air-fuel ratio, or upgrading for better performance, Pro-X pilot jets offer precise sizing, uniform flow rates, and race-proven reliability. With strict quality control and precision machining, these jets eliminate hesitation, improve fuel efficiency, and ensure crisp throttle transitions, making them the perfect choice for riders, mechanics, and tuners looking to maximize engine performance. Pro-X Racing Keihin pilot jets will fit many Keihin carburetors, like PJ, PWK, PWM, some smoothbore carbs, etc. Pro-X offers a wide range of jets for N424-21, N424-26, N424-74C Series. Pro-X pilot jets are manufactured in Japan to exact OEM specification and are a cost efficient alternative for the relative expensive original parts. Fine-tune your carburetor for altitude changes, aftermarket modifications, and peak performance tuning using Pro-X jets. Select the jet sizes needed for your off-road ride.

Not Yet Reviewed

$246.99

Pro-X Racing Parts Mikuni Pilot Jet Assortment Kits

Whether you're rejetting for altitude changes, optimizing your air-fuel ratio, or upgrading for better performance, Pro-X pilot jets offer precise sizing, uniform flow rates, and race-proven reliability. With strict quality control and precision machining, these jets eliminate hesitation, improve fuel efficiency, and ensure crisp throttle transitions, making them the perfect choice for riders, mechanics, and tuners looking to maximize engine performance. Pro-X Racing Mikuni pilot jets will fit many Mikuni carburetors, like Mikuni VM Roundslide and TMX, RS carbs, and they offer a wide range of jets for M28/1001, N224.103 and VM22/210 Series carburetors. Pro-X pilot jets are manufactured in Japan to exact OEM specifications and are offered as a cost efficient alternative for the relative expensive original parts. Fine-tune your carburetor for altitude changes, aftermarket modifications, and peak performance tuning using Pro-X jets. Select the jet sizes needed for your off-road ride.

Not Yet Reviewed

$305.99

Mikuni Pilot Air Screw Washers

To get the most out of your machine, you need all of the parts of your carburetor to function properly. If your screws are stripped or your washers are cracked, you will lose power and have a poor-running engine. You need to substitute the worn or broken parts with their direct replacements. Mikuni pilot air screw washers are a piece of your tuning puzzle. They are manufactured from steel and arrive ready to work. Mikuni pilot air screw washers are a simple answer to having a top-performing carburetor.

Not Yet Reviewed

$7.99

Mikuni Pilot Air Screw O-Rings

To get the most out of your machine, you need all of the parts of your carburetor to function. If your screws are stripped or your gaskets are dried or leaking, you will lose power and have a poor-running engine. You need to substitute the worn or broken parts with their direct replacements. Mikuni pilot air screw O-rings are a piece of your puzzle. They are manufactured from Buna rubber and arrive ready to work. Mikuni pilot air screw O-rings are a simple answer to having a top-performing carburetor.

Not Yet Reviewed

$7.99

JR Race Car Mikuni 28mm Jet Block Kits

JR Race Car Mikuni 28mm jet block kits provide an assortment of jets and a place to store them. The kits include 10 main, five pilot, and eight air jets, plus a billet aluminum block to screw them into when not in use. You'll have a range of jets for your Mikuni tuning with block kits from JR Race Car. Jets included: * Main jets--410, 420, 430, 440, 450, 460, 470, 480, 490, 500 * Air jets--.5, .6, .7, .8, .9, 1.0, 1.1, 1.2 * Pilot--65, 70, 75, 80, 85

Not Yet Reviewed

$125.29

Pro-X Racing Parts Carburetor Jets

Pro-X Racing Parts offers a full line of pilot and main carburetor jets. These brass replacements are available in a wide range of sizes. They are nozzles in the engine that suck up gasoline so that the carburetor can mix it with oxygen before sending that powerful mixture to the cylinders. Equip your powersports machine with carb jets that ensure top performance—Pro-X!

Not Yet Reviewed

$12.99

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$21.99

Briggs & Stratton Carburetor Jets

Briggs & Stratton carburetor jets feed your Kart's engine just the right amount of fuel. Sold individually, as well as in small quantities, these main and pilot jets will assist in achieving efficient flow to your Briggs & Stratton purpose-built race engines. They're available in a variety of styles and sizes for use with specific carb models. Meter the amount of fuel at idle and full throttle with Briggs & Stratton carburetor jets.

Not Yet Reviewed

$12.99

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$26.99

Twin Power Carburetor Jet Assortments for Keihin CV Carburetors

All Twin Power carburetor jets are made of brass, which ensures high-precision and flow-calibration for an extremely accurate fuel flow rate. These jet assortment packages are ideal for Keihin CV-style carburetors, and are needed when adjusting air/fuel mixture after you install a hi-flow air filter or exhaust. They're packaged in a plastic tray, with part numbers referenced for easy identification and reordering. Twin Power 23-piece sets include two of each jet size, as follows: * Pilot jets: .040, .042, .044, .045, .046, .048, .050, .052, .054 * Main jets: .140, .145, .150, .155, .160, .165, .170, .175, .180, .185, .190, .195, .200, .205

Not Yet Reviewed

$220.45

AED Power Valve Restrictors

These tiny little items can make a big difference in the way that your carburetor runs. AED blank power valve restrictors are designed for the quick fine-tuning of your power valve. AED has the replacement components that you need for your carburetor.

2.5 out of 5 stars ( 4 )

$25.79

Go Fast Bits VTA Performance Blow-Off Valves

Go Fast Bits VTAs are a performance blow-off valve solution for a wide range of foreign and domestic cars and trucks with an electronic factory diverter valve. If you want sound with your performance (or performance with your sound!), these VTAs offer just that! By combining the proven performance benefits of GFB's ground-breaking DV+ with atmosphere venting, the VTA delivers an aggressive blow-off sound, improved throttle response and boost recovery, as well as superior boost holding and reliability in extreme conditions. The VTA shares the successful DV+ design philosophy: "Keep what works, replace what doesn't." This means Go Fast Bits retained ECU control and the solenoid from the factory diverter to ensure the fastest possible response time—without the added and unnecessary cost of replacing the solenoid like some brands do. The weak part of the factory diverter has always been the plastic valve mechanism; this is the part GFB has replaced. The VTA features CNC-machined billet components that last a lifetime, and the valve operation method has been updated for better performance. The factory diverter valve can only operate in two states: open or closed. When it opens fully at low boost or during a partial throttle lift mid-corner, it causes increased lag and a noticeably non-linear boost transition. GFB pioneered the use of "pilot operation" in the DV+, which works by re-purposing the factory solenoid to control the pressure behind the piston rather than the piston itself. This allows the solenoid stroke to be much shorter, speeding up the response time and increasing the actuation force. More importantly, it allows the piston to open and close progressively in response to the amount of boost pressure present, which smooths boost transitions and reduces the lag caused by the factory diverter valve. It's this design philosophy that makes the VTA not only the best performing blow-off valve solution, but also the best value on the market. Order the VTA Performance blow-off valve model recommended for your vehicle. Key features: * TMS Technology for faster boost recovery on gear shift and during throttle modulation * Improved boost holding ability * Atmosphere venting for blow-off sound * Retains ECU control * Simple, direct bolt-on kits include everything you need to install

5.0 out of 5 stars ( 5 )

$206.55

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$280.44

JR Race Car Mikuni 33mm Jet Block Kits

JR Race Car Mikuni 28mm jet block kits provide an assortment of jets and a place to store them. These kits include 10 main, five pilot, and eight air jets, plus a billet aluminum block to screw them into when not in use. You'll have a range of jets for your Mikuni tuning with block kits from JR Race Car. Jets included: * Main jets--165, 170, 175, 180, 185, 190, 195, 200, 205, 210 * Air jets--.6, .7, .8, .9, 1.0, 1.1, 1.2, 1.3 * Pilot--.052, .055, .059, 0.63, blank

4.0 out of 5 stars ( 2 )

$143.59

HardDrive 40mm CV Carburetors

HardDrive offers 40mm CV carburetors for a variety of Harley-Davidson© street bikes from the 1980s, '90s, and 2000s. These stock replacements include many features, such as: * 40mm CV carburetor body * Idle mixture screw is exposed for easy tuning * Comes with fuel line and vent hose * Upgraded to brass fuel inlet, compared to the stock plastic inlet * Jets installed: Slow No. 45, Main No. 185 * Additional jets for tuning Pilot No. 48, No. 50; Main No. 190, No. 200 * Updated components to be direct interchange with OE Keihin CVs * Utilizes stock-style choke cable (not included) * Rebuild kit available

Not Yet Reviewed

$233.06

Briggs & Stratton Carburetor Jet Kits

Briggs & Stratton carburetor jet kits feed your Kart's engine just the right amount of fuel. Each kit contains an assortment of main and pilot jets that will assist in achieving efficient flow to Briggs & Stratton purpose-built race engines. Order the model designed for your carb application—then meter the amount of fuel at idle and full throttle with a Briggs & Stratton carburetor jet kit.

Not Yet Reviewed

$78.99

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$84.99

Wiseco Carburetor Jet Kits

Wiseco offers carburetor jet kits for Keihin and Mikuni carburetors to allow tuning after an exhaust or other type of engine modification. These tuning kits will help improve mid-range throttle response and add additional fuel to wide-open throttle running conditions. The kits have multiple jets per size, a wide jet range, and separate kits for either main or pilot jets to provide you with endless tuning capabilities. Whether you're planning to play with your low-end or high-end by jetting your carburetor, Wiseco has the jet kit for you!

Not Yet Reviewed

$233.99

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$282.99

Mishimoto Air-to-Water Performance Intercooler Power Packs

Mishimoto air-to-water performance intercooler Power Packs include S55 Performance intercooler, heat exchanger, and charge pipe kit to strengthen weaknesses in the BMW's design. The Power Packs are offered in a choice of 12 BMW-specific color matching options or classic black, so your go-fast parts in the engine bay can now match the exterior beauty of your BMW. Mishimoto's charge pipes feature full-aluminum construction with a cast mid-section and matte black silicone couplers that can handle the boost pressure, unlike the factory plastic that can crack under pressure, or split at the seams, creating a less than ideal situation as you pilot your vehicle. Next, the non-descript box is replaced with a stylish, colorful air-to-water intercooler featuring a bar-and-plate core with increased core volume and a single-pass coolant flow layout for optimal heat transfer. Adding to both these improvements is Mishimoto's larger full-aluminum heat exchanger providing increased external fin surface area and core volume. Additional features and specs: * 12 degree F drop in intake air temperatures and 10 degree F reduction in global intercooler coolant temperatures * Dyno-proven average power gains of 11 WHP and 8 WTQ with peak gains of up to 31 WHP and 10 WTQ on Stage 1 tuned vehicle * Intercooler features unique bar-and-plate, single-pass coolant passage design, and cast aluminum end tanks for optimal flow and cooling capacity * Intercooler core volume increased by 29 percent with 16 percent improved flow * Heat Exchanger features all-aluminum construction with 180 percent increase in fin surface area and 60 percent increase in core volume * Heat exchanger includes optional stone guard for added protection against road debris * Heat exchanger utilizes variable fin pitch for improved flow to DCT cooler * Mishimoto lifetime warranty

Not Yet Reviewed

$2,521.95

Fel-Pro Fuel Injector O-Ring Sets

Fel-Pro fuel injector O-ring sets help maintain performance vehicle. These replacement rings are engineered to offer a good, tight seal and prevent fuel leakage into hot engine compartments. Over time, your factory O-rings can become worn or cracked—leading to erratic fuel injection. Update the small accessories with the Fel-Pro set recommended for your vehicle and engine application.

4.0 out of 5 stars ( 10 )

$4.99

MotoRad Locking Fuel Caps

Deter fuel theft and vandalism with some help from MotoRad Products. These MotoRad locking gas caps offer OEM-quality construction and materials and a famous maker lock cylinder with two keys. MotoRad locking gas caps are available in push-on, threaded, and quick-on styles, depending on your application.

4.22 out of 5 stars ( 9 )

$12.99

MotoRad OE Replacement-Type Fuel Caps

MotoRad has you covered if you lose or damage your fuel cap. These OE replacement-type fuel caps are a direct fit for your application. They will ensure that you get a proper seal to prevent any fuel loss or evaporation.

3.81 out of 5 stars ( 27 )

$5.99

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$6.99

Fram Extra Guard Air Filters

Fram Extra Guard air filters help keep damaging particles from entering your engine and causing increased wear. They feature a dry paper element with a standard screen for durability. These air filters are designed to keep your engine running at peak performance under any driving conditions. When you're ready to replace your present air filter, order the Fram Extra Guard air filter designed for your year, make, and model.

4.52 out of 5 stars ( 83 )

$12.47

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$17.98

AEM Induction Cold Air Intake Kits

AEM Induction cold air intake kits outperform every other cold air kit on the market. The difference is in their mandrel-bent aluminum or polyethylene intake pipe, which relocates the air filter outside of the engine bay for a cooler, denser intake charge. Unlike many other kits available, each pipe is individually tuned, in both length and diameter, to a specific application for maximum power gains. These AEM Induction cold air intake kits include an air filter, intake tube, and complete hardware kit. Order the model designed for fitment and best performance on your specific vehicle.

4.46 out of 5 stars ( 95 )

$399.99

Dorman Air Intake Hoses

Dorman offers these air intake hoses to replace your OEM cracked or broken air intake hoses. They are manufactured from quality materials and can be installed easily without any modifications. Available for passenger cars, trucks, or SUVs, the Dorman air intake hoses will get all of the air flowing to your throttle body.

4.5 out of 5 stars ( 22 )

$42.99

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