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Start ShoppingAthena P400000140002 Main Jet - Precision Fuel Delivery for Carbureted Engines
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Description
The Athena P400000140002 Main Jet is engineered to deliver precise fuel metering for carbureted engines, ensuring peak performance and reliable operation. Whether you're tuning a high-performance motorcycle or off-road vehicle, this critical component optimizes fuel flow for power, efficiency, and smooth throttle response.
Key Features
- Precision Fuel Metering: Ensures accurate fuel delivery for consistent engine performance and improved throttle response.
- High-Quality Construction: Durable brass alloy withstands high temperatures and corrosion for long-lasting reliability.
- Easy Installation: Designed for seamless integration with standard carburetor systems, reducing setup time and complexity.
- Compatibility: Fits most carbureted powersports engines for versatile use across motorcycles, ATVs, and more.
Why Choose This Product
Athena's Main Jet delivers unmatched precision and durability, making it a trusted choice for riders who demand performance. Its optimized fuel flow enhances engine efficiency while maintaining emissions control. Whether you're racing, riding, or tuning for daily use, this jet ensures your engine runs cleaner, faster, and stronger with minimal maintenance.
SKU:
GM66EF31A1
MPN:
P400000140002
UPC:
8050043269065
Category:
Intake/Carb/Fuel System
Brand:
Athena
Stock:
In Stock
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The Athena P400000140002 Main Jet is engineered to deliver precise fuel metering for carbureted engines, ensuring peak performance and reliable operation. Whether you're tuning a high-performance motorcycle or off-road vehicle, this critical component optimizes fuel flow for power, efficiency, and smooth throttle response.
Key Features
- Precision Fuel Metering: Ensures accurate fuel delivery for consistent engine performance and improved throttle response.
- High-Quality Construction: Durable brass alloy withstands high temperatures and corrosion for long-lasting reliability.
- Easy Installation: Designed for seamless integration with standard carburetor systems, reducing setup time and complexity.
- Compatibility: Fits most carbureted powersports engines for versatile use across motorcycles, ATVs, and more.
Why Choose This Product
Athena's Main Jet delivers unmatched precision and durability, making it a trusted choice for riders who demand performance. Its optimized fuel flow enhances engine efficiency while maintaining emissions control. Whether you're racing, riding, or tuning for daily use, this jet ensures your engine runs cleaner, faster, and stronger with minimal maintenance.
| SKU | GM66EF31A1 |
|---|---|
| MPN | P400000140002 |
| UPC/GTIN | 8050043269065 |
| Brand | Athena |
| Category | Intake/Carb/Fuel System |
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Featured Review
| Make | Model | Years |
|---|---|---|
| KTM | 250 SX-F | 2008-2018 |
| KTM | 450 SX-F | 2008-2018 |
| KTM | 350 SX-F | 2009-2019 |
| Honda | CRF450R | 2004-2009 |
| Yamaha | YZ450F | 2005-2009 |
Frequently Asked Questions
Fits Keihin FCR flat-slide carburetors on various KTM SX-F and Honda/Yamaha 4-stroke motocross bikes.
No, it's an aftermarket Athena jet made to OEM specifications in brass.
Often purchased in kits; main jet 140 is for richer mid-to-high RPM fueling.
Yes, compatible with stock needle and clip position, but tuning may be required.
Installation Guide
Difficulty
Easy
Est. Time
10 min
Tools Required
- Small flathead screwdriver
- Needle nose pliers
Pro Tips
- Use carb cleaner to clean all jets before install
- Label jets by size to avoid mix-ups
Common Mistakes to Avoid
- Dropping the tiny jet into the carb body
- Not cleaning the needle jet before installation
Comparison vs Stock/OEM
Direct replacement for OEM Keihin main jet #140
Improvements
- Precision machined for consistent flow
- High-quality brass resists corrosion
Considerations
- Identical performance to OEM at lower cost
Durability & Warranty
Expected Lifespan
Indefinite with proper cleaning; lasts multiple rebuilds
Warranty
Limited lifetime against manufacturing defects
Maintenance
Clean with carb cleaner during every carb service
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