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Start ShoppingMikuni FN102221-175 High Speed Jet - Precision Engine Tuning for Power & Performance
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Description
Elevate your powersports experience with the Mikuni FN102221-175 High Speed Jet, engineered to deliver exceptional power output and smooth throttle response for high-performance applications. This advanced jet system combines precision engineering with durable construction to optimize fuel efficiency and engine performance across a wide range of operating conditions.
Key Features
- High-Speed Operation: Designed for maximum airflow efficiency at elevated RPMs, ensuring consistent power delivery during aggressive riding.
- Durable Construction: Precision-machined brass components resist wear and corrosion, ensuring long-term reliability in demanding environments.
- Easy Maintenance: Simple adjustment mechanisms allow for quick tuning to match engine specifications and riding conditions.
- Compatibility: Universal fit for a wide range of 2-stroke engines, making it a versatile upgrade option.
- Advanced Tuning: Optimized air-fuel mixture ratios for improved throttle response and fuel efficiency.
Why Choose This Product
Whether you're tackling off-road trails or racing on the track, the Mikuni FN102221-175 High Speed Jet provides the precision and performance needed to dominate. Its durable design ensures consistent operation through extreme conditions, while the easy-to-adjust setup allows riders to fine-tune performance to their specific needs. With enhanced airflow management and optimized fuel delivery, this jet system delivers superior power output without compromising engine longevity. Perfect for riders who demand the highest level of performance from their powersports equipment.
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Elevate your powersports experience with the Mikuni FN102221-175 High Speed Jet, engineered to deliver exceptional power output and smooth throttle response for high-performance applications. This advanced jet system combines precision engineering with durable construction to optimize fuel efficiency and engine performance across a wide range of operating conditions.
Key Features
- High-Speed Operation: Designed for maximum airflow efficiency at elevated RPMs, ensuring consistent power delivery during aggressive riding.
- Durable Construction: Precision-machined brass components resist wear and corrosion, ensuring long-term reliability in demanding environments.
- Easy Maintenance: Simple adjustment mechanisms allow for quick tuning to match engine specifications and riding conditions.
- Compatibility: Universal fit for a wide range of 2-stroke engines, making it a versatile upgrade option.
- Advanced Tuning: Optimized air-fuel mixture ratios for improved throttle response and fuel efficiency.
Why Choose This Product
Whether you're tackling off-road trails or racing on the track, the Mikuni FN102221-175 High Speed Jet provides the precision and performance needed to dominate. Its durable design ensures consistent operation through extreme conditions, while the easy-to-adjust setup allows riders to fine-tune performance to their specific needs. With enhanced airflow management and optimized fuel delivery, this jet system delivers superior power output without compromising engine longevity. Perfect for riders who demand the highest level of performance from their powersports equipment.
| SKU | GMC70D272C |
|---|---|
| MPN | FN102221-175 |
| Brand | MIKUNI |
| Category | Jets |
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Featured Review
| Make | Model | Years |
|---|---|---|
| Various Japanese | Keihin/Mikuni carbureted motorcycles, ATVs | 1985-2024 |
| Honda | XR series, CRF250R/450R | 1990-2020 |
| Yamaha | PW, YZ, XT series | 1980-2015 |
| Suzuki | DR-Z, RM, LT series | 1985-2020 |
Frequently Asked Questions
The high speed (main) jet controls fuel flow at higher RPMs and throttle positions. It affects mid-range and full throttle performance.
If your engine runs too lean (hesitation, popping on decel) you need a larger jet. If it runs too rich (black smoke, fouled plugs) you need a smaller jet. Consult your carburetor tuning guide.
This jet fits Mikuni carburetors with the FN102221 jet holder. Verify your carburetor model number matches before purchasing.
Yes. Air filter upgrades, exhaust changes, and engine modifications typically require rejetting for optimal performance and reliability.
On some applications, yes - if you can access the jet from outside the bowl. However, removing the carburetor allows proper cleaning and gasket replacement.
Installation Guide
Difficulty
Easy
Est. Time
15 min
Tools Required
- Small screwdriver (Phillips or flat head)
- Carburetor removal tools (varies by application)
- Clean workspace
- Gasket scraper (plastic preferred)
Pro Tips
- Take photos during disassembly for reference
- Use a gasket scraper to remove old gasket material completely
- Tighten jet snugly but do not force - brass is soft
- Consider cleaning entire carburetor while disassembled
- Keep small parts organized in a container
Common Mistakes to Avoid
- Over-tightening jet (can strip brass)
- Not replacing gasket when reassembling
- Installing jet upside down
- Not cleaning carburetor passages before reassembly
- Forgetting to drain fuel before disassembly
Durability & Warranty
Expected Lifespan
Indefinite if not damaged - jets don't wear out
Warranty
Typically covered under manufacturer warranty if defective
Maintenance
No maintenance required - replace only if damaged or incorrect size
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