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Start ShoppingMikuni FN102221-105 High Speed Jet - Precision Fuel Delivery for Power Boats
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Description
Upgrade your power boat's performance with the Mikuni FN102221-105 High Speed Jet. Engineered for precision fuel delivery, this advanced jet system optimizes engine efficiency, delivers consistent power output, and ensures smooth operation even under demanding conditions. Perfect for anglers and thrill-seekers who demand peak performance from their watercraft.
Key Features
- High-Speed Fuel Metering: Precisely calibrated for maximum power and fuel efficiency in high-performance engines.
- Durable Construction: Made from corrosion-resistant materials to withstand harsh marine environments and prolonged use.
- Easy Installation: Designed for quick, hassle-free integration with existing fuel systems without major modifications.
- Adjustable Flow Rates: Customizable settings to match specific engine requirements and operating conditions.
- Compatibility: Fits a wide range of powerboat engines for versatile application across different boat models.
Why Choose This Product
Whether you're chasing speed on open waters or need reliable performance for daily use, the Mikuni FN102221-105 High Speed Jet offers unmatched precision and durability. Its advanced fuel delivery system reduces engine strain, improves fuel economy, and enhances overall boat performance. The rugged build ensures long-term reliability, while the intuitive design makes maintenance and adjustments straightforward for boating enthusiasts of all skill levels.
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Upgrade your power boat's performance with the Mikuni FN102221-105 High Speed Jet. Engineered for precision fuel delivery, this advanced jet system optimizes engine efficiency, delivers consistent power output, and ensures smooth operation even under demanding conditions. Perfect for anglers and thrill-seekers who demand peak performance from their watercraft.
Key Features
- High-Speed Fuel Metering: Precisely calibrated for maximum power and fuel efficiency in high-performance engines.
- Durable Construction: Made from corrosion-resistant materials to withstand harsh marine environments and prolonged use.
- Easy Installation: Designed for quick, hassle-free integration with existing fuel systems without major modifications.
- Adjustable Flow Rates: Customizable settings to match specific engine requirements and operating conditions.
- Compatibility: Fits a wide range of powerboat engines for versatile application across different boat models.
Why Choose This Product
Whether you're chasing speed on open waters or need reliable performance for daily use, the Mikuni FN102221-105 High Speed Jet offers unmatched precision and durability. Its advanced fuel delivery system reduces engine strain, improves fuel economy, and enhances overall boat performance. The rugged build ensures long-term reliability, while the intuitive design makes maintenance and adjustments straightforward for boating enthusiasts of all skill levels.
| SKU | GM9080E121 |
|---|---|
| MPN | FN102221-105 |
| Brand | MIKUNI |
| Category | Jets |
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Featured Review
| Make | Model | Years |
|---|---|---|
| Various Japanese | Models using Mikuni VM/PF/BS carburetors | 1980-2025 |
| Honda | CR125R, CR250R, XR series | 1990-2010 |
| Yamaha | YZ125, YZ250, TTR series | 1985-2005 |
| Kawasaki | KX125, KX250 | 1995-2015 |
Frequently Asked Questions
Fits most Mikuni VM, BS, PF, and HSR series carburetors used on Japanese motorcycles and ATVs.
This is a high speed (main) jet for the main circuit, size #105.
Often paired with needle and pilot jet changes for complete tuning, especially with exhaust or airbox mods.
No, Mikuni jets have different threading; confirm your carb brand.
Installation Guide
Difficulty
Easy
Est. Time
5 min
Tools Required
- Small flathead screwdriver
- Jet wrench or needle nose pliers
Pro Tips
- Remove carb from bike for easier access. Clean with carb cleaner. Test jetting after install with plug reads
Common Mistakes to Avoid
- Dropping the jet into the carb body (hard to retrieve)
- Not cleaning carb passages before install
Comparison vs Stock/OEM
Direct OEM replacement or upgrade for stock Mikuni carbs
Improvements
- Precise fuel delivery for tuned engines
- Better atomization at WOT
Considerations
- Requires dyno or plug chop tuning for optimal results
Durability & Warranty
Expected Lifespan
Indefinite with proper carb maintenance (does not wear out)
Warranty
Limited lifetime from Mikuni against manufacturing defects
Maintenance
Inspect for corrosion or debris during carb cleans (every 10-20 hours)
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