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Start ShoppingMikuni FN102221-147.5 High Speed Jet - Precision Fuel Delivery for Power Sports
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Description
Elevate your power sports performance with the Mikuni FN102221-147.5 High Speed Jet, engineered for precision fuel delivery and unmatched reliability. This critical engine component ensures optimal combustion efficiency, delivering consistent power output for motorcycles, ATVs, and other off-road vehicles.
Key Features
- High-Speed Fuel Delivery: Advanced metering technology ensures precise fuel-air mixture for maximum horsepower and throttle response.
- Durable Construction: Precision-machined brass components withstand extreme temperatures and harsh operating conditions.
- Easy Maintenance: Simplified design allows for quick cleaning and adjustment, reducing downtime for riders.
- Universal Compatibility: Designed to fit a wide range of 2-stroke and 4-stroke power sports engines.
Why Choose This Product
Whether you're tackling rugged terrain or racing on the track, the Mikuni FN102221-147.5 High Speed Jet provides the performance edge you need. Its robust build ensures long-term reliability, while the precise fuel delivery system enhances engine efficiency and fuel economy. Perfect for mechanics and riders looking to optimize their power sports equipment without compromising on quality.
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Elevate your power sports performance with the Mikuni FN102221-147.5 High Speed Jet, engineered for precision fuel delivery and unmatched reliability. This critical engine component ensures optimal combustion efficiency, delivering consistent power output for motorcycles, ATVs, and other off-road vehicles.
Key Features
- High-Speed Fuel Delivery: Advanced metering technology ensures precise fuel-air mixture for maximum horsepower and throttle response.
- Durable Construction: Precision-machined brass components withstand extreme temperatures and harsh operating conditions.
- Easy Maintenance: Simplified design allows for quick cleaning and adjustment, reducing downtime for riders.
- Universal Compatibility: Designed to fit a wide range of 2-stroke and 4-stroke power sports engines.
Why Choose This Product
Whether you're tackling rugged terrain or racing on the track, the Mikuni FN102221-147.5 High Speed Jet provides the performance edge you need. Its robust build ensures long-term reliability, while the precise fuel delivery system enhances engine efficiency and fuel economy. Perfect for mechanics and riders looking to optimize their power sports equipment without compromising on quality.
| SKU | GMF29EE9B6 |
|---|---|
| MPN | FN102221-147.5 |
| Brand | MIKUNI |
| Category | Jets |
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Featured Review
| Make | Model | Years |
|---|---|---|
| Various (Honda, Yamaha, Kawasaki, Suzuki) | Models with Mikuni VM or BS carburetors (e.g., Honda CRF450R, Yamaha YZ450F, Kawasaki KX450, Suzuki RMZ450) | 1980-2025 |
Frequently Asked Questions
Fits Mikuni VM series (VM26 to VM34) and BS series (BS30 to BS40) carburetors commonly found on 125cc-500cc dirt bikes and ATVs.
Use plug chop method: richer if plug black/wet, leaner if white/dry. Start from stock jet size and adjust based on elevation/fuel/mods.
Yes, OEM Mikuni part number FN102221-147.5. Avoid cheap knockoffs.
Carb modifications may affect warranty; check with manufacturer.
Installation Guide
Difficulty
Easy
Est. Time
5 min
Tools Required
- Small flathead screwdriver
- Jet wrench or needle nose pliers
Pro Tips
- Count turns on air screw before disassembly. Clean all passages. Test in small increments (e.g., 2.5 sizes up/down).
Common Mistakes to Avoid
- Dropping the tiny jet into carb body (use magnet tool)
- Not cleaning needle jet before install
Comparison vs Stock/OEM
Direct OEM replacement or upgrade from stock jet sizing
Improvements
- Precise fuel delivery for modified engines/exhaust/airbox
- Better top-end power and throttle response
- Optimized for altitude/fuel changes
Considerations
- Requires tuning; improper jetting can cause lean seize or rich fouling
Durability & Warranty
Expected Lifespan
Indefinite (does not wear out; replace only if damaged)
Warranty
Mikuni lifetime against defects
Maintenance
Inspect during carb cleaning; clean with carb cleaner, no abrasives
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