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Start ShoppingMIKUNI FVM28/486-40 Bleed Pilot Jets - Precision Fuel Mixture Control for Carburetors
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Description
Upgrade your carburetor's fuel delivery system with MIKUNI's FVM28/486-40 Bleed Pilot Jets. These precision-engineered components ensure optimal fuel-air mixture control, delivering smoother throttle response and enhanced engine performance for two-stroke power sports equipment.
Key Features
- Exact Fuel Mixture Control: Fine-tune fuel delivery for improved low-speed performance and throttle response.
- Compatibility: Designed for specific MIKUNI carburetor models to ensure seamless integration.
- Durable Construction: Made from high-quality brass for long-lasting performance in demanding conditions.
- Easy Installation: Streamlined design for quick replacement without compromising system integrity.
Why Choose This Product
Whether you're tuning a racing engine or optimizing daily use, these bleed pilot jets provide reliable fuel delivery precision. Their compact design reduces fuel vaporization while maintaining consistent airflow, ensuring smooth idling and responsive acceleration. Perfect for mechanics and riders seeking enhanced engine efficiency without complex modifications.
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Upgrade your carburetor's fuel delivery system with MIKUNI's FVM28/486-40 Bleed Pilot Jets. These precision-engineered components ensure optimal fuel-air mixture control, delivering smoother throttle response and enhanced engine performance for two-stroke power sports equipment.
Key Features
- Exact Fuel Mixture Control: Fine-tune fuel delivery for improved low-speed performance and throttle response.
- Compatibility: Designed for specific MIKUNI carburetor models to ensure seamless integration.
- Durable Construction: Made from high-quality brass for long-lasting performance in demanding conditions.
- Easy Installation: Streamlined design for quick replacement without compromising system integrity.
Why Choose This Product
Whether you're tuning a racing engine or optimizing daily use, these bleed pilot jets provide reliable fuel delivery precision. Their compact design reduces fuel vaporization while maintaining consistent airflow, ensuring smooth idling and responsive acceleration. Perfect for mechanics and riders seeking enhanced engine efficiency without complex modifications.
| SKU | GMFBE458A0 |
|---|---|
| MPN | FVM28/486-40 |
| Brand | MIKUNI |
| Category | Jets |
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Featured Review
| Make | Model | Years |
|---|---|---|
| Suzuki | RM250, RMZ250, RM125, RMZ450 | 1980-2005 |
| Kawasaki | KX125, KX250 | 1990-2010 |
| Yamaha | YZ125, YZ250 | 1985-2000 |
Frequently Asked Questions
Designed for Mikuni FVM28 carburetors found on Suzuki RM, Kawasaki KX, and Yamaha YZ models from 1980s-2000s.
This is an OEM-spec bleed pilot jet (size 486-40) for precise fuel metering at idle/low RPM.
Often used when rejetting for altitude, exhaust, or air filter changes. Check main jet and needle too.
Size is stamped on jet (486-40). Common for stock setups; larger for richer, smaller for leaner.
Installation Guide
Difficulty
Easy
Est. Time
15 min
Tools Required
- Small flathead screwdriver
- Jet removal tool or needle nose pliers
- Carb cleaner
Pro Tips
- Use carb cleaner to flush passages
- Label jets before removal
- Test idle after install and adjust air screw
Common Mistakes to Avoid
- Not cleaning carb passages before install
- Dropping tiny jet into carb body
Comparison vs Stock/OEM
Direct OEM replacement for factory Mikuni FVM28 pilot jets
Improvements
- Precision machined for consistent fuel delivery
- Ideal for tuning worn stock jets
Considerations
- No performance gain over stock unless tuning required
Durability & Warranty
Expected Lifespan
Indefinite with proper maintenance; outlasts carb life
Warranty
Limited manufacturer warranty against defects
Maintenance
Clean with carb cleaner during annual service; inspect for clogging
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