Best Motorcycle Main JETS

Looking for the best motorcycle main jets to upgrade your ride? We’ve tested and reviewed the top 10 options to help you find the perfect fit for smoother, stronger performance.

Motorcycle main jets are key to your bike’s performance. They control fuel flow, giving you power and efficiency. Choosing the right jets can make your ride smoother and stronger.

Upgrading your main jets is easy and affordable. It’s a smart way to boost your engine’s output. Whether you’re tuning for speed or saving fuel, the right jets make a big difference.

We’ve tested and reviewed the best motorcycle main jets for you. From universal kits to brand-specific options, we’ve got you covered. Get ready to transform your ride with our expert guide.

List of Top 10 Motorcycle Main JETS

Title	Best For	Price
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 kit is perfect for motorcycle riders, DIY tuners, and engine enthusiasts who want the right jet sizes to fine-tune their carburetors. It’s made for those who value easy installation, durable brass parts, and having plenty of options ready to match their ride.	View on Amazon (paid link)
50pcs Main Jets Slow Jets Pilot Cleaner Tool Kit Fits for PWK CVK PE Keihin OKO Carb KOSO Polini KO SCL-2018090001-3 Jet Kits Fits Honda Yamaha Kawasaki Suzuki KTM BMW Ducati Triumph Aprilia Agusta	This 50-piece jet kit is perfect for motorcycle enthusiasts who want to tune their carburetor for better performance. It’s ideal for riders of Honda, Yamaha, Kawasaki, Suzuki, KTM, BMW, Ducati, Triumph, Aprilia, and Agusta bikes.	View on Amazon (paid link)
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, quad, go kart, or motorcycle with a compatible carburetor. It’s ideal for tuning your engine for better performance and power.	View on Amazon (paid link)
Gohantee 30Pcs Carburetor Main Jet and Pilot Slow Jet Kit, Including 20Pcs Main Jet and 10Pcs Slow Pilot Jet, Replacement for Mikuni Carburetor Large Round N100.604 & VM28/486, Compatible with Suzuki	This kit is perfect for motorcycle owners, mechanics, and DIY riders who want smooth engine performance. It’s made for anyone needing reliable Mikuni carburetor replacement jets for Suzuki, Kawasaki, or Yamaha bikes.	View on Amazon (paid link)
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 kit is perfect for motorcycle riders, DIY mechanics, and anyone who wants smooth engine tuning with the right jet sizes always on hand. It’s made for people who value easy installation and wide compatibility.	View on Amazon (paid link)
Strongthium Carburetor Main Jet Kit for Nibbi Keihin CVK PE PZ GY6 99101-393 99101-GHB-000 95# ~128# Mikuni 19.201	This kit is perfect for motorcycle riders, ATV owners, and scooter enthusiasts who want smooth power and reliable performance. It’s made for anyone upgrading or tuning their Honda, Kawasaki, Suzuki, or GY6 engines with precision.	View on Amazon (paid link)
Motoforti Universal Motorcycle Carburetor Jets Main Jets Nozzles, 152 155 160 165 170 175 180 185 190 195, Durable, Metal, Gold Tone, 10pcs	This set is perfect for motorcycle riders, ATV owners, and dirt bike enthusiasts who want better fuel economy and smoother performance. It’s made for anyone who values durable parts and easy upgrades.	View on Amazon (paid link)
Strongthium Carburetor Main Jet Kit for Nibbi Keihin CVK PE PZ GY6 99101-393 99101-GHB-000 130# ~162# Mikuni 19.201	This Strongthium Carburetor Main Jet Kit is perfect for motorcycle enthusiasts who want to upgrade their ride. It’s ideal for owners of Honda, Kawasaki, Suzuki, and more, fitting GY6 engines, dirt bikes, ATVs, and scooters.	View on Amazon (paid link)
Strongthium Carburetor Main Jet Kit for Nibbi Keihin FCR FCR-MX PE PJ PWK PWM 99101-357 168# ~ 230#	This kit is perfect for dirt bike riders, ATV owners, and powersport fans who want smooth power and better tuning. If you ride Honda, Yamaha, Kawasaki, KTM, Suzuki, or Polaris, these jets keep your carb running strong.	View on Amazon (paid link)
Set of 10 Main Jet Kit Replacement for OKO Carburetor 118 120 122 145 148 150 152 155 158 160	This main jet kit is perfect for anyone with an OKO carburetor needing a quick, easy fix. It’s ready to use and fits 10 different sizes, so you’ll have exactly what you need.	View on Amazon (paid link)

Detailed Reviews

Discover the Best Motorcycle Main JETS with our expert guide. Each kit is carefully reviewed for performance, fit, and value. You’ll see the top choices trusted by riders worldwide. Read on to find the perfect jet kit for your bike.

1. YAMAKATO Aftermarket 22pcs Carburetor Jet Kit w/11 Main Jets and 11 Slow Jet for Nibbi Honda PWK Keihin Yamaha OKO CVK PWM Type

Get the right fit fast. Choose from 22 brass jets. Install with ease.

You get 11 main jets and 11 pilot jets. Perfect for PWK, CVK, PE, OKO, KOSO, and more.

Sizes are clear and simple. Main jets: 100–145. Pilot jets: 32–58.

Pros	Cons
22-piece kit with 11 main jets and 11 slow jets. Brass material ensures rust-free and durable performance. Easy installation for quick upgrades to your carburetor. Wide range of jet sizes for precise tuning.	Not compatible with VM22 carburetors Must verify fitment before ordering Limited to specific thread sizes only

Perfect For:

This kit is perfect for motorcycle riders, DIY tuners, and engine enthusiasts who want the right jet sizes to fine-tune their carburetors. It’s made for those who value easy installation, durable brass parts, and having plenty of options ready to match their ride.

Ready to Purchase?

View Price on Amazon (paid link)

2. 50pcs Main Jets Slow Jets Pilot Cleaner Tool Kit Fits for PWK CVK PE Keihin OKO Carb KOSO Polini KO SCL-2018090001-3 Jet Kits Fits Honda Yamaha Kawasaki Suzuki KTM BMW Ducati Triumph Aprilia Agusta

50pcs Main Jets Slow Jets Pilot Cleaner Tool Kit Fits for PWK CVK PE Keihin OKO Carb KOSO Polini KO SCL-2018090001-3 Jet Kits Fits Honda Yamaha Kawasaki Suzuki KTM BMW Ducati Triumph Aprilia Agusta

Get your carb running smooth. Get your bike firing strong. Get the 50pcs Jet Cleaner Tool Kit today.

This kit has slow jets and main jets in many sizes. It fits Honda, Yamaha, Kawasaki, Suzuki, KTM, BMW, Ducati, Triumph, and more.

Made of quality brass for easy install. Works with PWK, CVK, PE, OKO, KOSO, Polini, and more. Wide use. Strong build. Perfect fit.

Pros	Cons
50-piece kit for easy carburetor maintenance and tuning. Brass material ensures durability and smooth installation. Wide compatibility fits Honda, Yamaha, Kawasaki, and more. Precise sizing for optimal engine performance and efficiency.	Not universal: Doesn’t fit all carburetors, check before buying. No instructions: No guide included, installation might be tricky. Brass material: May wear faster than other metals over time.

Perfect For:

This 50-piece jet kit is perfect for motorcycle enthusiasts who want to tune their carburetor for better performance. It’s ideal for riders of Honda, Yamaha, Kawasaki, Suzuki, KTM, BMW, Ducati, Triumph, Aprilia, and Agusta bikes.

Ready to Purchase?

View Price on Amazon (paid link)

3. 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

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 anyone looking to upgrade their dirt bike, ATV, or go kart. It includes 30 main jets and 10 pilot jets, offering a wide range of sizes to fine-tune your engine’s performance. This kit is compatible with many carburetor brands, making it a versatile choice.

It fits PE, PWK, Keihin, CVK, OKO, KOSO, Polini, and Nibb carburetors. Works with110cc-300cc engines, includingpit bikes,scooters, andquads.
Made frompremium brass, these jets resistcorrosion andheat.CNC precision ensures aperfect fit andsmooth operation*.

This kit is a great replacement for worn-out jets. It lets you boost power and optimize your engine’s performance. Easy to install, it’s a smart upgrade for any vehicle.

Pros	Cons
Wide compatibility with many carburetor models Works on dirt bikes, ATVs, scooters, go karts Durable brass for long-lasting performance CNC precision ensures smooth fit and accuracy Easy swap for more power and tuning	Limited to specific carburetors and vehicles, not universal. No instructions included, might confuse beginners. Brass material may wear faster under extreme use.

Perfect For:

This carburetor jet kit is perfect for anyone who owns a dirt bike, ATV, quad, go kart, or motorcycle with a compatible carburetor. It’s ideal for tuning your engine for better performance and power.

Ready to Purchase?

View Price on Amazon (paid link)

4. Gohantee 30Pcs Carburetor Main Jet and Pilot Slow Jet Kit, Including 20Pcs Main Jet and 10Pcs Slow Pilot Jet, Replacement for Mikuni Carburetor Large Round N100.604 & VM28/486, Compatible with Suzuki

Gohantee 30Pcs Carburetor Main Jet and Pilot Slow Jet Kit, Including 20Pcs Main Jet and 10Pcs Slow Pilot Jet, Replacement for Mikuni Carburetor Large Round N100.604 & VM28/486, Compatible with Suzuki

The Gohantee 30Pcs Carburetor Main Jet and Pilot Slow Jet Kit is a must-have for tuning your Mikuni carburetor. It includes 20 main jets and 10 slow pilot jets, covering a wide range of sizes. This kit is perfect for optimizing engine performance.

It works with Mikuni models like VM28/486 and N100.604, as well as Suzuki bikes. The main jets range from 120 to 240, and pilot jets from 17.5 to 40. This variety ensures a precise fit for your needs.

The package includes 30 pieces in total. If you have questions, the team is ready to help. This kit is reliable and easy to use for better engine performance.

Pros	Cons
30-piece kit covers all your jet needs. Wide size range for perfect tuning. Fits many Mikuni models with ease. Strong compatibility with Suzuki, Kawasaki, Yamaha. Easy replacement for smooth engine performance.	Hard to match exact size without a feel for your engine. Only 30 pieces may run short if you need many replacements. No warranty listed—risk if jets fail early.

Perfect For:

This kit is perfect for motorcycle owners, mechanics, and DIY riders who want smooth engine performance. It’s made for anyone needing reliable Mikuni carburetor replacement jets for Suzuki, Kawasaki, or Yamaha bikes.

Ready to Purchase?

View Price on Amazon (paid link)

5. 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.

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 22-piece carburetor jet kit gives you both main jets and slow jets in one set. Made from premium brass, they are smooth, clean, and easy to install. You get precise sizes for better tuning and performance.

It fits a wide range of PWK, CVK, PE, OKO, KOSO, Polini, Stage-6 carburetors. With 11 main jets and 11 slow jets, you’ll always have the right size ready.

Pros	Cons
Brass construction ensures durability and smooth performance. 22-piece kit offers versatile sizing for easy replacements. Wide compatibility fits multiple carburetor types effortlessly. Uniform threads and clean finish make installation a breeze.	Compatibility may not fit all carburetors Size check needed before purchase No storage box included for parts

Perfect For:

This kit is perfect for motorcycle riders, DIY mechanics, and anyone who wants smooth engine tuning with the right jet sizes always on hand. It’s made for people who value easy installation and wide compatibility.

Ready to Purchase?

View Price on Amazon (paid link)

6. Strongthium Carburetor Main Jet Kit for Nibbi Keihin CVK PE PZ GY6 99101-393 99101-GHB-000 95# ~128# Mikuni 19.201

Get the perfect fit for your carburetor with the Strongthium Main Jet Kit. It comes in 13 sizes from 95 to 128. Easy to install, built to last, and ready to boost performance.

This kit works with Honda, Kawasaki, Suzuki, and more. It covers a wide range of bikes and ATVs.

Ride with smooth power and better fuel flow. Enjoy reliable performance every time. Get the jet kit that keeps your engine strong.

Pros	Cons
Wide size range for perfect tuning Fits Honda, Kawasaki, Suzuki and more Works on ATVs, dirt bikes, scooters Built for reliable performance every ride Easy to install and adjust quickly	Limited to specific models, not universal. No installation tools or instructions included. Small parts, easy to lose during assembly.

Perfect For:

This kit is perfect for motorcycle riders, ATV owners, and scooter enthusiasts who want smooth power and reliable performance. It’s made for anyone upgrading or tuning their Honda, Kawasaki, Suzuki, or GY6 engines with precision.

Ready to Purchase?

View Price on Amazon (paid link)

7. Motoforti Universal Motorcycle Carburetor Jets Main Jets Nozzles, 152 155 160 165 170 175 180 185 190 195, Durable, Metal, Gold Tone, 10pcs

Motoforti Universal Motorcycle Carburetor Jets are durable and gold-toned, made of high-quality metal. They come in a 10-piece set with sizes ranging from 152 to 195.

These main jets fit most motorcycles, ATVs, and dirt bikes. They improve fuel economy by better mixing air and fuel. Reduce fuel consumption with this easy upgrade.

Professional installation is highly recommended. Each set includes 10 main jets. Enhance your ride’s performance today!

Pros	Cons
Universal fit for most bikes and ATVs Better fuel economy with improved air-fuel mix Durable metal build for long-lasting use 10 jet sizes for flexible tuning options Easy upgrade for smoother performance	Professional installation needed, not a simple DIY job. No instructions included, making setup tricky. Gold tone may not match all bike styles.

Perfect For:

This set is perfect for motorcycle riders, ATV owners, and dirt bike enthusiasts who want better fuel economy and smoother performance. It’s made for anyone who values durable parts and easy upgrades.

Ready to Purchase?

View Price on Amazon (paid link)

8. Strongthium Carburetor Main Jet Kit for Nibbi Keihin CVK PE PZ GY6 99101-393 99101-GHB-000 130# ~162# Mikuni 19.201

Get the right jet size every time. This kit has 14 options from 130 to 162. It fits a wide range of Honda, Kawasaki, Suzuki, and more.

Perfect for motorcycles, dirt bikes, ATVs, and scooters. Built for smooth performance and reliable tuning.

Pros	Cons
Wide size range for perfect tuning Fits Honda, Kawasaki, Suzuki and more Built for motorcycles, ATVs, scooters, buggies Ensures smooth performance and reliable power Easy to install and adjust anytime	Not universal fit — may not match all carb models Requires tuning — beginners might find setup tricky Limited instructions — lacks clear install guide

Perfect For:

This Strongthium Carburetor Main Jet Kit is perfect for motorcycle enthusiasts who want to upgrade their ride. It’s ideal for owners of Honda, Kawasaki, Suzuki, and more, fitting GY6 engines, dirt bikes, ATVs, and scooters.

Ready to Purchase?

View Price on Amazon (paid link)

9. Strongthium Carburetor Main Jet Kit for Nibbi Keihin FCR FCR-MX PE PJ PWK PWM 99101-357 168# ~ 230#

Upgrade your ride fast. Get precision fuel flow. Boost engine performance today.

This main jet kit fits many Honda, Yamaha, Kawasaki, KTM, Suzuki, Polaris, Husqvarna, and Beta machines. It covers dirt bikes, ATVs, and more.

Choose from sizes 168–230 for perfect tuning. Works with Nibbi, Keihin, OKO, KOSO carburetors.

Pros	Cons
Wide size range for perfect tuning. Fits many carburetors with ease. Works on popular dirt bikes and ATVs. Built for Honda, Yamaha, KTM, Suzuki and more. Reliable performance upgrade for riders.	Limited to specific carburetor models and sizes. No installation tools or instructions included. May require tuning for optimal performance.

Perfect For:

This kit is perfect for dirt bike riders, ATV owners, and powersport fans who want smooth power and better tuning. If you ride Honda, Yamaha, Kawasaki, KTM, Suzuki, or Polaris, these jets keep your carb running strong.

Ready to Purchase?

View Price on Amazon (paid link)

10. Set of 10 Main Jet Kit Replacement for OKO Carburetor 118 120 122 145 148 150 152 155 158 160

This main jet kit is a perfect fit for OKO carburetors. It includes 10 different sizes, from 118 to 160. Each size comes with one piece, ready for use.

The kit is a direct replacement, making it easy to install. Always check your model to ensure the right fit.

Pros	Cons
Perfect fit for OKO carburetors, ensuring smooth performance. 10 sizes included, one for every need in a single kit. Ready to use, no hassle, direct replacement for quick fixes. Precise sizing ensures optimal engine efficiency every time.	Limited sizes may not fit all carburetors No extras beyond the 10 listed jets Fitment check required before purchase

Perfect For:

This main jet kit is perfect for anyone with an OKO carburetor needing a quick, easy fix. It’s ready to use and fits 10 different sizes, so you’ll have exactly what you need.

Ready to Purchase?

View Price on Amazon (paid link)

Buying Guide

Choosing the best motorcycle main jets is simple. The right jets give your bike smooth power. They make every ride feel stronger and easier.

Compatibility: Always check if the jets fit your carburetor type. Different brands like Keihin, Mikuni, or OKO need specific sizes. A wrong fit can waste fuel and reduce power.
Size Range: Look for kits with a wide range of sizes. This lets you fine-tune for speed, fuel economy, or terrain. More options mean better control over performance.
Material Quality: Choose jets made from premium brass or durable metal. Strong materials resist heat and corrosion. This ensures long-lasting performance.
Ease of Installation: Good kits are easy to install. Clear markings on jet sizes save time. Smooth threads make fitting simple and stress-free.
Performance Goals: Decide if you want more power or better fuel efficiency. Main jets affect top speed, while pilot jets help with low-end response. Match the kit to your riding style.
Versatility: Some kits fit multiple carburetor models. This is useful if you own more than one bike or ATV. Versatile kits save money and effort.
Precision: CNC-machined jets give accurate fuel flow. Precision means smoother throttle response. It also reduces engine wear over time.
Kit Size: Bigger kits with 20–50 pieces offer more choices. Smaller kits are fine if you only need a few sizes. Pick based on how much tuning you plan to do.
Brand Reliability: Trusted brands provide consistent quality. Reviews and ratings help confirm reliability. A good brand ensures your bike runs at its best.