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Start ShoppingMIKUNI FN102221-82.5 High Speed Jet - Precision Fuel Delivery for Power & Performance
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Description
Upgrade your powersports engine's performance with the MIKUNI FN102221-82.5 High Speed Jet. This precision-engineered fuel jet ensures optimal air-fuel ratios for enhanced power, responsiveness, and fuel efficiency across a range of high-performance applications.
Key Features
- High-Speed Fuel Delivery: Optimized for rapid throttle response and consistent power output during high-speed operation.
- Durable Construction: Precision-machined brass components withstand extreme temperatures and corrosive environments.
- Adjustable Needle: Fine-tune fuel metering for custom performance tuning and varying operating conditions.
- Universal Compatibility: Designed to fit standard Mikuni carburetor systems for easy installation.
- Efficient Flow Rate: Balanced flow characteristics reduce fuel waste while maintaining peak engine performance.
Why Choose This Product
Whether you're modifying a high-performance ATV, dirt bike, or off-road vehicle, this Mikuni jet delivers reliable fuel delivery that maximizes horsepower while minimizing fuel consumption. Its corrosion-resistant materials ensure long-term durability, while the adjustable needle allows for precise calibration to match your engine's unique requirements. The streamlined design reduces maintenance needs, making it a smart investment for serious riders seeking peak performance.
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Upgrade your powersports engine's performance with the MIKUNI FN102221-82.5 High Speed Jet. This precision-engineered fuel jet ensures optimal air-fuel ratios for enhanced power, responsiveness, and fuel efficiency across a range of high-performance applications.
Key Features
- High-Speed Fuel Delivery: Optimized for rapid throttle response and consistent power output during high-speed operation.
- Durable Construction: Precision-machined brass components withstand extreme temperatures and corrosive environments.
- Adjustable Needle: Fine-tune fuel metering for custom performance tuning and varying operating conditions.
- Universal Compatibility: Designed to fit standard Mikuni carburetor systems for easy installation.
- Efficient Flow Rate: Balanced flow characteristics reduce fuel waste while maintaining peak engine performance.
Why Choose This Product
Whether you're modifying a high-performance ATV, dirt bike, or off-road vehicle, this Mikuni jet delivers reliable fuel delivery that maximizes horsepower while minimizing fuel consumption. Its corrosion-resistant materials ensure long-term durability, while the adjustable needle allows for precise calibration to match your engine's unique requirements. The streamlined design reduces maintenance needs, making it a smart investment for serious riders seeking peak performance.
| SKU | GM32FB02F4 |
|---|---|
| MPN | FN102221-82.5 |
| Brand | MIKUNI |
| Category | Jets |
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Featured Review
| Make | Model | Years |
|---|---|---|
| Various | Mikuni TM/VM/P series carbureted motorcycles/ATVs | 1980-2025 |
| Yamaha | YZ250/WR250 | 2000-2010 |
| Honda | CR250R/CRF450R | 1995-2005 |
| Kawasaki | KX250F/KX450F | 2005-2015 |
Frequently Asked Questions
The high speed (main) jet controls fuel flow when the throttle is opened beyond the needle position. It affects performance at higher RPMs and full throttle conditions.
If your engine runs too lean (hesitation, popping on decel) or too rich (black smoke, fouled plugs), you may need to adjust jet size. Consult your carburetor tuning guide or engine manual.
Yes, jet replacement is a basic maintenance task. You'll need to remove the carburetor and access the main jet, typically located in the carburetor bowl.
Larger numbers = larger orifice = more fuel flow. The 82.5 size is a mid-range main jet. Smaller jets lean out the mixture, larger jets richen it.
Yes. Performance modifications (air filter, exhaust, porting) typically require rejetting to maintain proper fuel-air ratio and performance.
Installation Guide
Difficulty
Easy
Est. Time
15 min
Tools Required
- Small screwdriver or jet removal tool
- Clean workspace
- Container for small parts
Pro Tips
- Take photos during disassembly for reference
- Clean carburetor thoroughly while apart
- Use a small gasket scraper to remove old gasket material
- Test run engine and check for proper idle and throttle response
Common Mistakes to Avoid
- Over-tightening jet (can damage brass)
- Installing jet upside down
- Not cleaning carburetor before reassembly
- Forgetting to drain fuel first
Durability & Warranty
Expected Lifespan
Indefinite if not damaged; jets rarely wear out
Maintenance
No maintenance required; replace only when tuning or if damaged
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