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Start ShoppingMIKUNI FVM28/486-17.5 Bleed Pilot Jets - Precision Fuel Mixture Control for High-Performance Engines
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Description
Upgrade your carburetor's fuel delivery system with MIKUNI's precision-engineered bleed pilot jets. These critical components ensure accurate fuel metering at low RPMs, delivering smooth throttle response and enhanced engine performance for motorcycles, ATVs, and off-road vehicles.
Key Features
- Exact Fuel Mixture Control: Fine-tune air-fuel ratios for improved power delivery and fuel efficiency.
- Universal Compatibility: Designed for MIKUNI carburetor systems with 17.5mm bore sizes.
- Durable Brass Construction: Resists corrosion and maintains precision under extreme operating conditions.
- Easy Installation: Streamlined design fits standard carburetor setups with minimal adjustment required.
Why Choose This Product
These bleed pilot jets offer unmatched reliability for riders demanding peak engine performance. The precise orifice sizing ensures consistent fuel flow, reducing hesitation and improving low-end torque. Ideal for both stock engines and modified powerplants, these jets provide the foundation for successful carburetor tuning without compromising durability or efficiency.
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Upgrade your carburetor's fuel delivery system with MIKUNI's precision-engineered bleed pilot jets. These critical components ensure accurate fuel metering at low RPMs, delivering smooth throttle response and enhanced engine performance for motorcycles, ATVs, and off-road vehicles.
Key Features
- Exact Fuel Mixture Control: Fine-tune air-fuel ratios for improved power delivery and fuel efficiency.
- Universal Compatibility: Designed for MIKUNI carburetor systems with 17.5mm bore sizes.
- Durable Brass Construction: Resists corrosion and maintains precision under extreme operating conditions.
- Easy Installation: Streamlined design fits standard carburetor setups with minimal adjustment required.
Why Choose This Product
These bleed pilot jets offer unmatched reliability for riders demanding peak engine performance. The precise orifice sizing ensures consistent fuel flow, reducing hesitation and improving low-end torque. Ideal for both stock engines and modified powerplants, these jets provide the foundation for successful carburetor tuning without compromising durability or efficiency.
| SKU | GMC1021FF3 |
|---|---|
| MPN | FVM28/486-17.5 |
| Brand | MIKUNI |
| Category | Jets |
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Featured Review
| Make | Model | Years |
|---|---|---|
| Various Japanese | Models with Mikuni VM28 carburetors (e.g., Yamaha YZ250, Suzuki RM250, Honda CR250, Kawasaki KX250) | 1980-2025 |
| Yamaha | PW80, YZ80, TTR90 | 1990-2010 |
Frequently Asked Questions
Fits Mikuni FVM28/486 series carburetors, common on 2-stroke dirt bikes like Yamaha YZ/RM series.
It's an OEM-spec replacement with bleed hole for precise fuel metering; ideal for tuning.
Use a jetting chart based on altitude, temperature, and mods; smaller number = leaner.
No, as it's an OEM manufacturer part, but check with your vehicle manufacturer.
Installation Guide
Difficulty
Easy
Est. Time
15 min
Tools Required
- Small flathead screwdriver
- Jet removal tool or needle-nose pliers
Pro Tips
- Count turns on air screw before removal
- Use carb cleaner to verify jet flow
Common Mistakes to Avoid
- Not cleaning carb passages before install
- Installing wrong size jet
Comparison vs Stock/OEM
Direct OEM replacement from Mikuni (many stock carbs are Mikuni)
Improvements
- Precise metering for altitude/temp changes
- Bleed design reduces clogging
Considerations
- Requires proper jetting knowledge for optimal performance
Durability & Warranty
Expected Lifespan
Indefinite with proper maintenance (brass construction)
Warranty
Limited lifetime from Mikuni against defects
Maintenance
Inspect/clean during carb service (every 10-20 hours)
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