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Start ShoppingMIKUNI FN100606-72.5 Low Speed Jet - High-Performance Intake System for Powersports Vehicles
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Description
Upgrade your powersports vehicle's fuel system with the MIKUNI FN100606-72.5 Low Speed Jet. This high-performance intake component ensures precise fuel metering at low RPMs, delivering improved throttle response, smoother power delivery, and enhanced fuel efficiency for a wide range of off-road and utility vehicles.
Key Features
- Precision Fuel Metering: Optimized for low-speed operation, ensuring consistent fuel delivery across varying engine loads.
- Durable Construction: Made from high-quality brass for long-lasting performance in harsh outdoor environments.
- Universal Compatibility: Designed to fit most MIKUNI carburetor models, offering easy installation and adaptability.
- Adjustable Settings: Fine-tune fuel flow for custom performance tuning and rider preferences.
- Streamlined Design: Reduces air resistance while maintaining optimal airflow for combustion efficiency.
Why Choose This Product
Whether you're tackling rugged terrain or maximizing fuel efficiency, this low-speed jet delivers reliable performance with minimal maintenance. Its precision engineering ensures your engine runs cooler, accelerates faster, and maintains consistent power output. The durable brass construction resists corrosion, while the adjustable settings allow for tailored performance optimization. Perfect for riders seeking enhanced control and efficiency without compromising on reliability.
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Upgrade your powersports vehicle's fuel system with the MIKUNI FN100606-72.5 Low Speed Jet. This high-performance intake component ensures precise fuel metering at low RPMs, delivering improved throttle response, smoother power delivery, and enhanced fuel efficiency for a wide range of off-road and utility vehicles.
Key Features
- Precision Fuel Metering: Optimized for low-speed operation, ensuring consistent fuel delivery across varying engine loads.
- Durable Construction: Made from high-quality brass for long-lasting performance in harsh outdoor environments.
- Universal Compatibility: Designed to fit most MIKUNI carburetor models, offering easy installation and adaptability.
- Adjustable Settings: Fine-tune fuel flow for custom performance tuning and rider preferences.
- Streamlined Design: Reduces air resistance while maintaining optimal airflow for combustion efficiency.
Why Choose This Product
Whether you're tackling rugged terrain or maximizing fuel efficiency, this low-speed jet delivers reliable performance with minimal maintenance. Its precision engineering ensures your engine runs cooler, accelerates faster, and maintains consistent power output. The durable brass construction resists corrosion, while the adjustable settings allow for tailored performance optimization. Perfect for riders seeking enhanced control and efficiency without compromising on reliability.| SKU | GM4DE65439 |
|---|---|
| MPN | FN100606-72.5 |
| Brand | MIKUNI |
| Category | Intake/Carb/Fuel System |
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Featured Review
| Make | Model | Years |
|---|---|---|
| Yamaha | YZ450F | 2008-2024 |
| Kawasaki | KX450F | 2006-2012 |
| Honda | CRF450R | 2007-2015 |
| Suzuki | RMZ450 | 2009-2020 |
Frequently Asked Questions
Fits Keihin FCR-MX and PJ series carbs commonly found on 4-stroke motocross bikes like Yamaha YZ450F, Honda CRF450R.
Use plug chop method or wideband O2 sensor. Start with stock jet size and adjust based on plug color (chocolate brown ideal).
Yes, low speed jet (pilot jet) controls idle to 1/4 throttle fueling. Main jets handle 3/4 to WOT.
Yes, but full jetting kit (needle, slide) recommended for major changes like altitude or mods.
Installation Guide
Difficulty
Easy
Est. Time
10 min
Tools Required
- Small flathead screwdriver
- Needle nose pliers
- Jet cleaning wire or carb cleaner
Pro Tips
- Count turns on old jet to match idle position. Clean jet thoroughly before reuse. Test in small increments (2.5 sizes)
Common Mistakes to Avoid
- Not cleaning carb passages before install
- Installing without removing emulsion tube
Comparison vs Stock/OEM
Direct OEM replacement or upgrade for worn jets. Same brass material and threading.
Improvements
- Precise fuel metering for better throttle response
- Consistent manufacturing tolerances
Considerations
- Genuine Mikuni preferred over cheap copies for accuracy
Durability & Warranty
Expected Lifespan
2-5 years or 100+ hours depending on fuel quality and cleaning frequency
Warranty
Limited manufacturer warranty through retailer
Maintenance
Clean with carb cleaner every 10-20 hours. Replace if passages enlarge from poor fuel.
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