Your cart is empty
Start ShoppingAthena P400000140002 Main Jet - Precision Fuel Delivery for Carbureted Engines
Fits your
May not fit your
Description
Upgrade your powersports engine's fuel system with Athena's P400000140002 Main Jet, designed to deliver precise fuel flow for maximum performance and reliability. This critical component ensures consistent fuel metering, improving throttle response and engine efficiency across a range of riding conditions.
Key Features
- High-Flow Design: Optimized fuel passage for enhanced combustion efficiency and power output.
- Durable Construction: Precision-machined brass for long-lasting performance in harsh environments.
- Easy Installation: Compatible with standard carburetor setups for quick, hassle-free replacement.
- Adjustable Settings: Fine-tune fuel delivery for custom tuning and rider preferences.
- Sealed Housing: Prevents contamination and maintains fuel system integrity.
Why Choose This Product
Athena's Main Jet delivers unmatched reliability for riders seeking precision fuel control. Its corrosion-resistant materials withstand extreme temperatures, while the adjustable flow settings allow for tailored performance optimization. Whether you're modifying your engine or maintaining peak efficiency, this Main Jet ensures consistent fuel delivery for smoother acceleration, improved fuel economy, and reduced engine wear. Perfect for motorcycles, ATVs, and other carbureted powersports equipment.
SKU:
GM4CD998CF
MPN:
P400000140002 EACH
Category:
Intake/Carb/Fuel System
Brand:
Athena
Stock:
In Stock
Delivery
Checking availability...
Estimated arrival
Order within to ship today
Orders ship
Shipping to
Enter your ZIP code for delivery estimate
Price Match Guarantee
Found it cheaper?
Log in to submit a price match request.
Price
Quantity
Free Shipping $100+
14-Day Returns
Secure Checkout
Price Match
Complete the Build
This item
$4.95
In Cart
Upgrade your powersports engine's fuel system with Athena's P400000140002 Main Jet, designed to deliver precise fuel flow for maximum performance and reliability. This critical component ensures consistent fuel metering, improving throttle response and engine efficiency across a range of riding conditions.
Key Features
- High-Flow Design: Optimized fuel passage for enhanced combustion efficiency and power output.
- Durable Construction: Precision-machined brass for long-lasting performance in harsh environments.
- Easy Installation: Compatible with standard carburetor setups for quick, hassle-free replacement.
- Adjustable Settings: Fine-tune fuel delivery for custom tuning and rider preferences.
- Sealed Housing: Prevents contamination and maintains fuel system integrity.
Why Choose This Product
Athena's Main Jet delivers unmatched reliability for riders seeking precision fuel control. Its corrosion-resistant materials withstand extreme temperatures, while the adjustable flow settings allow for tailored performance optimization. Whether you're modifying your engine or maintaining peak efficiency, this Main Jet ensures consistent fuel delivery for smoother acceleration, improved fuel economy, and reduced engine wear. Perfect for motorcycles, ATVs, and other carbureted powersports equipment.
| SKU | GM4CD998CF |
|---|---|
| MPN | P400000140002 EACH |
| Brand | Athena |
| Category | Intake/Carb/Fuel System |
0.0
0 reviews
0
Log in to write a review.
Reviews
No reviews yet. Be the first to review this product!
Featured Review
| Make | Model | Years |
|---|---|---|
| KTM | 250 SX-F | 2008-2014 |
| KTM | 450 SX-F | 2008-2014 |
| KTM | 350 SX-F | 2009-2015 |
| Honda | CRF450R | 2004-2009 |
| Yamaha | YZ450F | 2007-2013 |
Frequently Asked Questions
Fits Keihin FCR39/41 carburetors on KTM/Honda/Yamaha 4-stroke motocross bikes.
Depends on mods, altitude, and temperature. Start with OEM size and adjust 2-4 sizes richer/leaner as needed.
Yes, but full jet kit (needle, pilot jet) recommended for best results.
Athena jets are high-precision machined brass, often more consistent flow than OEM.
Installation Guide
Difficulty
Easy
Est. Time
10 min
Tools Required
- Small flathead screwdriver
- Jet needle tool or pick
Pro Tips
- Count turns on air screw before removal
- Clean jet thoroughly before install
- Re-jet in small increments (2-4 sizes)
Common Mistakes to Avoid
- Not cleaning carb passages before install
- Incorrect jet sizing for altitude/temp
Comparison vs Stock/OEM
Athena precision-machined brass vs OEM stamped jets
Improvements
- More consistent fuel flow
- Better threading/ sealing
- Easier to clean
Considerations
- Same performance when sized correctly
Durability & Warranty
Expected Lifespan
Indefinite with proper maintenance
Warranty
Limited manufacturer warranty
Maintenance
Clean with carb cleaner during service, inspect for damage
What Others Are Saying
Reviews from across the web
