Looking for the best carburetor main jet kits to enhance your engine’s performance? We’ve curated a list of 10 top-quality kits, made from durable materials like brass and designed for easy installation, to help you optimize fuel efficiency and boost power effortlessly.
Carburetor main jet kits are essential tools for anyone looking to fine-tune their engine’s performance. Whether you’re a DIY enthusiast or a professional mechanic, these kits offer precision and reliability to ensure your vehicle runs smoothly. With the right jets, you can optimize fuel efficiency and boost power, making every ride more enjoyable.
Choosing the best carburetor main jet kit can be overwhelming, but we’ve done the research for you. Our guide highlights top-quality kits made from durable materials like brass, designed to fit various carburetor models. From Mikuni to Keihin, we’ve got you covered with options that are easy to install and built to last.
Discover the perfect kit for your needs, whether you’re tuning a dirt bike, ATV, or street bike. Let’s dive in and find the ideal match for your engine!
List of Top 10 Carburetor Main Jet Kits
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40PCS Carburetor Main Jet Slow Pilot Jet Kit for PWK Keihin OKO CVK Crab,Replace #SCL-2018090002-ZH-T-01/02 SCL-2018090001/03-ZH-T-01 |
This 40PCS Carburetor Main Jet Slow Pilot Jet Kit is perfect for anyone tuning or repairing their carburetor. It’s ideal for PWK, Keihin, OKO, and CVK carburetors, offering high-quality brass jets for better performance. |
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YAMAKATO Aftermarket 22pcs Carburetor Jet Kit w/11 Main Jets and 11 Slow Jet for Nibbi Honda PWK Keihin Yamaha OKO CVK PWM Type |
This YAMAKATO Carburetor Jet Kit is perfect for anyone who needs to tune their carburetor for better performance. It’s ideal for riders with PWK, CVK, or similar carburetors who want easy installation and reliable parts. |
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Strongthium 42 Pcs Carburetor Jet Kit for Mikuni Main & Pilot Slow Jet N100.604 VM28/486 VM4/042 VM22/210 |
This Strongthium 42 Pcs Carburetor Jet Kit is perfect for anyone tuning their Mikuni carburetors. It’s great for 2-stroke and 4-stroke engines in street bikes, ATVs, and off-road vehicles. |
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YGQ Carburetor Jet Kit for Mikuni Main & Pilot Slow Jet 42 Pcs N100.604 VM28/486 VM4/042 VM22/210 |
This YGQ Carburetor Jet Kit is perfect for anyone who needs to tune or repair their Mikuni carburetor. It’s great for motorcycle, ATV, or offroad owners with Honda, Suzuki, Kawasaki, Yamaha, or Polaris vehicles. |
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XIKOBY 40PCS Carburetor Main Jet Slow Pilot Jet Kit Compatible with Keihin PE PWK CVK OKO KOSO Polini Carb Dirt Bike ATV Quad 4 Wheeler Go Kart, Include 30PCS Main Jet and 10PCS Pilot Jet Accessories |
This carburetor jet kit is perfect for anyone who owns a dirt bike, ATV, or go-kart and wants to improve performance. It’s easy to install and works with many models, making it a great choice for tuning your ride. |
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YAMAKATO 16pcs Carburetor Jet Kit Main Jets for Mikuni VM22 VM24 VM26 125cc 150cc 200cc 250cc for Mini Bike Dirt Bike Pit Bike ATV 88 90 95 98 100 105 110 115 120 125 130 135 140 145 150 155 |
This YAMAKATO 16pcs Carburetor Jet Kit is perfect for anyone who owns a mini bike, dirt bike, pit bike, or ATV with a Mikuni VM22, VM24, or VM26 carburetor. It’s ideal for tuning your engine to run smoothly and efficiently. |
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Hrwfnty 22Pcs Excellent Carburetor Jet Kit, Include 11 Pieces Carburetor Main Jet and 11 Pieces Slow Jet Compatible with Nibbi PWK Keihin Honda OKO CVK PE PWM Type. |
This Hrwfnty 22Pcs Carburetor Jet Kit is perfect for anyone who needs to tune or repair their carburetor. It’s great for DIY enthusiasts and mechanics working on motorcycles, ATVs, or other small engines. |
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YAMAKATO Aftermarket 33pcs Carburetor Jet Kit w/ 11pcs Slow Pilot Jets and 22pcs Main Jets for Honda PWK Keihin OKO CVK KOSO PE PWM Yamaha Mikuni Carb Upgrade and Rebuild |
This YAMAKATO Carburetor Jet Kit is perfect for riders who want to upgrade or rebuild their pit bikes, dirt bikes, scooters, ATVs, or Go Karts. It’s ideal for motors like 125cc, 150cc, 200cc, 250cc, GY6, 300EX, and 400EX. |
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36-181 Main Jet Assortment Kit Replacement for Jet Kits 36-181 Jet Assortment Kit Replacement for Holley 2010,2300,4010,4011,4150,4160,4500 Carburetor #64-99 |
This 36-181 Main Jet Assortment Kit is perfect for anyone tuning or upgrading a Holley carburetor. Whether you’re a professional mechanic or a car enthusiast, this kit offers durable, high-quality jets for optimal engine performance. |
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SYOWADA 25 Pcs Carburetor Main Jet Kit Replacement for Mikuni VM22 VM24 VM26 Carburetor Used on 125cc 150cc 200cc 250cc Engine Motorcycle Dirt Pit Bike (25 PCS) |
This SYOWADA 25 Pcs Carburetor Main Jet Kit is perfect for motorcycle enthusiasts and DIY lovers. It’s ideal for improving your bike’s performance if you have a 125cc, 150cc, 200cc, or 250cc engine. |
Detailed Reviews
Discover the top 10 Carburetor Main Jet Kits carefully selected for performance and value. Each kit is reviewed for quality, compatibility, and ease of use, ensuring you find the perfect match. Whether you’re tuning a dirt bike, ATV, or motorcycle, this guide has you covered. Dive in to find the best kit to boost your engine’s efficiency and power.
1. 40PCS Carburetor Main Jet Slow Pilot Jet Kit for PWK Keihin OKO CVK Crab,Replace #SCL-2018090002-ZH-T-01/02 SCL-2018090001/03-ZH-T-01

This 40-piece carburetor jet kit is made of high-quality solid brass. It fits PWK Keihin CVK PE type carburetors and others like OKO, KOSO, Stage-6, and Polini.
The kit includes 30 main jets and 10 slow pilot jets. Main jets range from #100 to #178, and slow pilot jets range from 32 to 55. Easy to install and built to last.
| Pros | Cons |
|---|---|
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Perfect For:
This 40PCS Carburetor Main Jet Slow Pilot Jet Kit is perfect for anyone tuning or repairing their carburetor. It’s ideal for PWK, Keihin, OKO, and CVK carburetors, offering high-quality brass jets for better performance.
Ready to Purchase?
2. YAMAKATO Aftermarket 22pcs Carburetor Jet Kit w/11 Main Jets and 11 Slow Jet for Nibbi Honda PWK Keihin Yamaha OKO CVK PWM Type

The YAMAKATO Aftermarket 22pcs Carburetor Jet Kit is a must-have for tuning your carburetor. It includes 11 main jets and 11 slow jets, perfect for PWK, CVK, and other types. Check your carb before buying to ensure a perfect fit.
Made of durable brass, these jets are rust-resistant and easy to install. The kit offers a wide range of sizes for both main and slow jets, giving you plenty of options for your engine.
This kit is ideal for OKO, KOSO, and similar carburetors. Verify your engine model to avoid compatibility issues. With 22 pieces, you’ll have everything you need for smooth performance.
| Pros | Cons |
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Perfect For:
This YAMAKATO Carburetor Jet Kit is perfect for anyone who needs to tune their carburetor for better performance. It’s ideal for riders with PWK, CVK, or similar carburetors who want easy installation and reliable parts.
Ready to Purchase?
3. Strongthium 42 Pcs Carburetor Jet Kit for Mikuni Main & Pilot Slow Jet N100.604 VM28/486 VM4/042 VM22/210

The Strongthium 42 Pcs Carburetor Jet Kit is a must-have for tuning your Mikuni carburetor. It includes a wide range of main and pilot jets for precise adjustments.
This kit works with many Mikuni models and fits 2-stroke and 4-stroke engines. It’s perfect for street, ATV, and offroad use.
| Pros | Cons |
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Perfect For:
This Strongthium 42 Pcs Carburetor Jet Kit is perfect for anyone tuning their Mikuni carburetors. It’s great for 2-stroke and 4-stroke engines in street bikes, ATVs, and off-road vehicles.
Ready to Purchase?
4. YGQ Carburetor Jet Kit for Mikuni Main & Pilot Slow Jet 42 Pcs N100.604 VM28/486 VM4/042 VM22/210

The YGQ Carburetor Jet Kit is a 42-piece set designed for Mikuni carburetors. It includes main jets, pilot jets, and slow jets in various sizes. These parts help optimize engine performance for better fuel efficiency and power.
This kit fits many Mikuni models, including VM, TM, and HSR series. It’s compatible with 2-stroke and 4-stroke engines in street bikes, ATVs, and offroad vehicles. The needle jet series also works with specific Mikuni designs.
Perfect for Honda, Suzuki, Kawasaki, Yamaha, and Polaris, this kit ensures smooth carburetor operation. It’s a must-have for tuning and repairs, offering precision and reliability.
| Pros | Cons |
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Perfect For:
This YGQ Carburetor Jet Kit is perfect for anyone who needs to tune or repair their Mikuni carburetor. It’s great for motorcycle, ATV, or offroad owners with Honda, Suzuki, Kawasaki, Yamaha, or Polaris vehicles.
Ready to Purchase?
5. XIKOBY 40PCS Carburetor Main Jet Slow Pilot Jet Kit Compatible with Keihin PE PWK CVK OKO KOSO Polini Carb Dirt Bike ATV Quad 4 Wheeler Go Kart, Include 30PCS Main Jet and 10PCS Pilot Jet Accessories

The XIKOBY 40PCS Carburetor Main Jet Slow Pilot Jet Kit is a must-have for dirt bike and ATV enthusiasts. It includes 30 main jets and 10 pilot jets, offering a wide range of sizes for precise tuning. This kit is compatible with many carburetor brands, making it a versatile choice.
Made from premium brass, these jets are durable and resistant to corrosion and high temperatures. The CNC production ensures a smooth surface and accurate dimensions, allowing for easy installation and optimal performance.
| Pros | Cons |
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Perfect For:
This carburetor jet kit is perfect for anyone who owns a dirt bike, ATV, or go-kart and wants to improve performance. It’s easy to install and works with many models, making it a great choice for tuning your ride.
Ready to Purchase?
6. YAMAKATO 16pcs Carburetor Jet Kit Main Jets for Mikuni VM22 VM24 VM26 125cc 150cc 200cc 250cc for Mini Bike Dirt Bike Pit Bike ATV 88 90 95 98 100 105 110 115 120 125 130 135 140 145 150 155

The YAMAKATO 16pcs Carburetor Jet Kit is perfect for tuning your mini bike, dirt bike, or ATV. It includes 16 main jets in sizes from 88 to 155. Each jet is clearly marked for easy use.
This kit fits Mikuni VM22, VM24, and VM26 carburetors on 125cc to 250cc engines. The thread size is M5*0.75, so check your carburetor before buying. It’s great for powersports vehicles like go-karts and UTVs.
The jets come in a nylon bag for safe storage. Always check the product images and sizes to ensure they fit your needs. This kit makes tuning your engine simple and efficient.
| Pros | Cons |
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Perfect For:
This YAMAKATO 16pcs Carburetor Jet Kit is perfect for anyone who owns a mini bike, dirt bike, pit bike, or ATV with a Mikuni VM22, VM24, or VM26 carburetor. It’s ideal for tuning your engine to run smoothly and efficiently.
Ready to Purchase?
7. Hrwfnty 22Pcs Excellent Carburetor Jet Kit, Include 11 Pieces Carburetor Main Jet and 11 Pieces Slow Jet Compatible with Nibbi PWK Keihin Honda OKO CVK PE PWM Type.

The Hrwfnty 22Pcs Carburetor Jet Kit is a must-have for anyone looking to fine-tune their carburetor. It includes 11 main jets and 11 slow jets, offering a wide range of sizes for precise adjustments.
Made from premium brass, this kit ensures durability and smooth installation. The uniform threads and clean finish make it easy to use. It’s a reliable choice for carburetor maintenance.
Compatible with PWK, CVK, PE, OKO, and more, this kit fits various carburetor types. Always check the size before buying to ensure a perfect fit. The 22-piece set provides plenty of options for replacements.
| Pros | Cons |
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Perfect For:
This Hrwfnty 22Pcs Carburetor Jet Kit is perfect for anyone who needs to tune or repair their carburetor. It’s great for DIY enthusiasts and mechanics working on motorcycles, ATVs, or other small engines.
Ready to Purchase?
8. YAMAKATO Aftermarket 33pcs Carburetor Jet Kit w/ 11pcs Slow Pilot Jets and 22pcs Main Jets for Honda PWK Keihin OKO CVK KOSO PE PWM Yamaha Mikuni Carb Upgrade and Rebuild

The YAMAKATO Aftermarket Carburetor Jet Kit is a 33-piece set designed for specific carburetors. It includes 11 slow pilot jets and 22 main jets for precise tuning. This kit is not universal, so check compatibility before buying.
Made from CNC-processed brass, these jets resist corrosion and ensure accurate sizing. They fit many Chinese bikes and ATVs with 125cc to 400EX motors. Also works with PWK, CVK, and other carb models.
Before ordering, verify the jet type matches your needs. Use the product image as a guide. This kit is ideal for upgrades and rebuilds on compatible models.
| Pros | Cons |
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Perfect For:
This YAMAKATO Carburetor Jet Kit is perfect for riders who want to upgrade or rebuild their pit bikes, dirt bikes, scooters, ATVs, or Go Karts. It’s ideal for motors like 125cc, 150cc, 200cc, 250cc, GY6, 300EX, and 400EX.
Ready to Purchase?
9. 36-181 Main Jet Assortment Kit Replacement for Jet Kits 36-181 Jet Assortment Kit Replacement for Holley 2010,2300,4010,4011,4150,4160,4500 Carburetor #64-99

The 36-181 Main Jet Assortment Kit is a must-have for carburetor tuning. It includes 72 brass jets, sized from #64 to #99. This kit is perfect for cleaning and upgrading your carburetor.
Made from high-quality brass, these jets are durable and corrosion-resistant. They ensure accurate fuel metering, which is key for optimal engine performance.
This kit is compatible with Holley carburetor models like 2010, 2300, 4010, 4011, 4150, 4160, and 4500. It comes in a handy organizer box, making it easy to find the right jet when you need it.
| Pros | Cons |
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Perfect For:
This 36-181 Main Jet Assortment Kit is perfect for anyone tuning or upgrading a Holley carburetor. Whether you’re a professional mechanic or a car enthusiast, this kit offers durable, high-quality jets for optimal engine performance.
Ready to Purchase?
10. SYOWADA 25 Pcs Carburetor Main Jet Kit Replacement for Mikuni VM22 VM24 VM26 Carburetor Used on 125cc 150cc 200cc 250cc Engine Motorcycle Dirt Pit Bike (25 PCS)

The SYOWADA 25 Pcs Carburetor Main Jet Kit is a must-have upgrade for your motorcycle or dirt pit bike. It works with Mikuni VM22, VM24, VM26, and VM30 carburetors.
This kit includes 25 pieces with sizes from #88 to #150. It has 10 bleed-hole jets and 15 main jets.
Installation is quick and easy. It boosts your vehicle’s performance. Perfect for riders and DIY enthusiasts.
| Pros | Cons |
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Perfect For:
This SYOWADA 25 Pcs Carburetor Main Jet Kit is perfect for motorcycle enthusiasts and DIY lovers. It’s ideal for improving your bike’s performance if you have a 125cc, 150cc, 200cc, or 250cc engine.
Ready to Purchase?
Buying Guide
Carburetor main jet kits are essential tools for anyone looking to fine-tune their engine’s performance. Whether you’re a DIY enthusiast or a professional mechanic, these kits offer precision and reliability to ensure your vehicle runs smoothly. With the right jets, you can optimize fuel efficiency and boost power, making every ride more enjoyable.
Buying the Best Carburetor Main Jet Kit: A Pro Guide
When choosing a carburetor main jet kit, consider these key factors to ensure you get the perfect match for your engine:
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Compatibility:
Make sure the kit fits your carburetor model and engine type. Check brands like Mikuni, Keihin, or Holley for specific compatibility. -
Material:
Look for kits made from durable materials like brass. They resist corrosion and ensure long-lasting performance. -
Jet Sizes:
Choose a kit with a wide range of jet sizes to allow for precise tuning. This ensures optimal fuel-air mixture for your engine. -
Ease of Installation:
Opt for kits with clear markings and smooth finishes for hassle-free installation. -
Purpose:
Consider whether you’re tuning a dirt bike, ATV, or street bike. Different kits cater to specific vehicle types. -
Brand Reputation:
Go for trusted brands known for quality and reliability. Reviews and ratings can guide your choice. -
Included Components:
Check if the kit includes main jets, pilot jets, and other accessories you need. -
Price and Value:
Balance cost with quality. A slightly higher investment often ensures better performance and durability.
With these factors in mind, you’ll find the ideal carburetor main jet kit to enhance your engine’s performance and make every ride smoother and more powerful.