Confirm this item fits
Add your vehicle details to make sure this item fits.
KTM 55431029540 - Main Jet 540
$9.01
Shipping & DeliveryShips from TX, United States.
Ships from TX, United States.
Return PolicyWant extra peace of mind? Even if a seller doesn't offer returns,
MX Locker gives you the option to make any item returnable with Return Assurance at checkout.
Want extra peace of mind? Even if a seller doesn't offer returns,
MX Locker gives you the option to make any item returnable with Return Assurance at checkout.
Shop With ConfidenceMX Locker is 100% committed to ensuring that every sale ends in satisfaction—for both buyer and seller. Your payment is held until the item is delivered and approved. If it's not as described, you'll receive a full refund.
Every transaction is backed by our secure payment system. We hold funds until you confirm the item arrived in the promised condition—so you can shop worry-free.
MX Locker is 100% committed to ensuring that every sale ends in satisfaction—for both buyer and seller. Your payment is held until the item is delivered and approved. If it's not as described, you'll receive a full refund.
Every transaction is backed by our secure payment system. We hold funds until you confirm the item arrived in the promised condition—so you can shop worry-free.
Overview
Description
KTM 55431029540 - Main Jet 540
|
📦
Shipping Policy
Fast Shipping
|
🔄
Return Policy
30-Day Returns
|
✅
100% Buyer Satisfaction
Checkout with confidence from an official dealer
|
This is a genuine OEM KTM main jet, size 540. It is a critical component located within the carburetor assembly responsible for regulating the fuel flow into the engine's combustion chamber. By metering the amount of fuel mixed with air at wide-open throttle, this jet ensures the correct fuel-to-air ratio for optimal engine performance and reliability. It is designed to exact factory specifications to maintain the intended fueling characteristics of your carburetor. Please verify fitment for your specific application before purchasing.
Key Features
- Genuine OEM KTM replacement part
- Precision-engineered for exact fuel metering
- Maintains correct air-fuel ratio at high RPMs
Why Choose KTM 55431029540 - Main Jet 540?
Choosing a genuine OEM KTM main jet ensures your carburetor operates exactly as designed by the factory. This precision-calibrated component is essential for maintaining proper fuel delivery and peak engine performance.
Specifications
| Brand | KTM |
| Part Number | 55431029540 |
| Condition | NEW |
| Notes/Other | Main jet size: 540. Professional installation and carburetor tuning are recommended when replacing fuel system components to ensure proper engine calibration. |
This part fits the following vehicles:
| Make | Year | Model |
|---|---|---|
| KTM | 2022 | 125 XC |
| KTM | 2021 | 125 XC |
| KTM | 2019 | 150 XC-W |
| KTM | 2019 | 250 XC |
| KTM | 2019 | 300 XC |
| KTM | 2018 | 150 XC-W |
| KTM | 2018 | 250 XC |
| KTM | 2018 | 250 XC-W |
| KTM | 2018 | 300 XC |
| KTM | 2018 | 300 XC-W |
| KTM | 2018 | 300 XC-W SIX DAYS |
| KTM | 2017 | 150 SX |
| KTM | 2017 | 150 XC-W |
| KTM | 2017 | 250 XC |
| KTM | 2017 | 250 XC-W |
| KTM | 2017 | 300 XC |
| KTM | 2017 | 300 XC-W |
| KTM | 2017 | 300 XC-W SIX DAYS |
Please verify fitment with your specific vehicle before purchasing.
Policies
Shipping Policy
Items ship within 1-2 business days.
Return Policy
Returns accepted within 30 days.
SLM Racing
© 2026 SLM Racing. All Rights Reserved.
Compatible with 27 KTM vehicle(s)Meet The Seller
Responds within 3 hours.
Ships within 3 business days.
Items match their descriptions.
Reviews
Need help? We're riders just like you.
By clicking subscribe, I agree to receive exclusive offers & promotions, news & reviews, and personalized tips for buying and selling on MX Locker.
MX Locker © 2026 Accessibility