Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
⚠️ California Proposition 65 Warning : Some products sold on this website may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
For more information, visit www.P65Warnings.ca.gov.
Specifications Size: 178,180,182,185,188,190,192,195,198,200 Fitment: Keihin PWK PE OKO 16.5mm in length with a 6mm Round Head Thread: 5mmx0.8 The length of thread: 5mm Package includes: 10X Main Jets
I bought these Main jet replacements for my Keihin PWK carb and they fit perfectly. The 10 different sizes from 178 to 200 give me a ton of options for tuning. Installation was straightforward, and I've noticed improved performance in my bike. Definitely a good purchase!
T
Tomoko Saito
Disappointed with quality
I was excited to use these jets for my bike, but a couple of them had imperfections that made them unusable. The fit was off on the 190 and 195, which is frustrating. I expected better quality from Main. Not sure if I would buy again.
E
Emily Chen
Good jets, but slow shipping
The jets from Main arrived in good condition and fit my Koso carb well, but it took a bit longer than expected to get here. I’m happy with the range of sizes, but the wait was a little annoying. Still, they work great for tuning!
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FAQs
Have a question ? We are here to help.
Is the shipping free?
Yes, we offer free standard shipping on all orders within the United States.
When will I receive my item?
Domestic orders typically arrive within 3-5 business days. Delivery times are estimated and may vary depending on your location, weather conditions, or other unforeseen factors.
Can I change or return my item?
We hope you love your purchase, but if you need to make a change or return your item, we’ve got you covered! You can initiate a return or exchange within 30 days of receiving your order. Please ensure the product is in its original condition and packaging. For more information on our return policy, please visit our Returns & Exchanges page.
Frequently Asked Questions
Q: What sizes do the main jets come in?A: The main jets come in ten sizes: one hundred seventy-eight, one hundred eighty, one hundred eighty-two, one hundred eighty-five, one hundred eighty-eight, one hundred ninety, one hundred ninety-two, one hundred ninety-five, one hundred ninety-eight, and two hundred.
Q: What material are the main jets made of?A: The main jets are made from high-quality metal that ensures durability and performance during use.
Q: What is the thread size of the main jets?A: The thread size of the main jets is five millimeters by zero point eight millimeters, ensuring a secure fit.
Q: How do I install the main jets?A: To install the main jets, first remove the old jet from your carburetor, then carefully screw in the new jet until it fits securely.
Q: Are these jets compatible with other brands?A: These main jets are specifically designed to fit Keihin PWK, PE, OKO, and KOSO carburetors, ensuring optimal compatibility.
Q: Can I use these jets for racing applications?A: Yes, these jets are designed for performance applications, making them suitable for racing and enhancing engine efficiency.
Q: How should I clean the main jets?A: To clean the main jets, use a carburetor cleaner and a soft brush to remove any dirt or debris, ensuring they are free of blockages.
Q: What is the shelf life of the main jets?A: The main jets do not have a specific shelf life but should be stored in a cool, dry place to maintain their quality.
Q: Is it safe to use these jets in a high-performance engine?A: Yes, these jets are safe for high-performance engines, as they are designed to handle increased fuel flow and pressure.
Q: What if the jets arrive damaged?A: If the jets arrive damaged, you can contact customer support for a replacement or refund within the return policy period.
Q: Do these jets come with a warranty?A: Yes, the main jets come with a manufacturer's warranty that covers defects in materials and workmanship.
Q: How many jets are included in the package?A: The package includes ten main jets, providing a variety of sizes for your needs.
Q: Are these jets suitable for beginners to install?A: Yes, these jets are suitable for beginners, but basic mechanical knowledge is recommended for proper installation.
Q: What tools do I need to install the main jets?A: You will need a basic set of tools, including a screwdriver and possibly a socket wrench, depending on your carburetor type.
Q: Can I mix different sizes of jets?A: Yes, you can mix different sizes of jets, but it's important to adjust for the correct air-fuel mixture for optimal performance.
Q: How do I determine the right jet size for my engine?A: To determine the right jet size, consult your engine's specifications and consider factors like altitude, temperature, and performance needs.