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Start ShoppingMIKUNI High Speed Jet - FN102221-137.5 | Premium Jet for Power & Performance
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Description
Elevate your powersports performance with MIKUNI's High Speed Jet, designed to deliver exceptional speed, efficiency, and durability for riders who demand the best. Whether you're racing or exploring, this jet ensures optimal power delivery and smooth operation under extreme conditions.
Key Features
- High-Speed Optimization: Advanced engineering for maximum thrust and responsiveness in high-performance engines.
- Durable Construction: Precision-machined components built to withstand harsh environments and prolonged use.
- Easy Maintenance: Simplified design for quick adjustments and routine servicing, reducing downtime.
- Universal Compatibility: Fits a wide range of engines for versatility across different powersports applications.
Why Choose This Product
MIKUNI's High Speed Jet combines cutting-edge technology with trusted reliability to give riders a competitive edge. Its robust build ensures long-term performance, while the streamlined design enhances fuel efficiency and throttle response. Perfect for racers and adventurers seeking uncompromising power and control.
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Elevate your powersports performance with MIKUNI's High Speed Jet, designed to deliver exceptional speed, efficiency, and durability for riders who demand the best. Whether you're racing or exploring, this jet ensures optimal power delivery and smooth operation under extreme conditions.
Key Features
- High-Speed Optimization: Advanced engineering for maximum thrust and responsiveness in high-performance engines.
- Durable Construction: Precision-machined components built to withstand harsh environments and prolonged use.
- Easy Maintenance: Simplified design for quick adjustments and routine servicing, reducing downtime.
- Universal Compatibility: Fits a wide range of engines for versatility across different powersports applications.
Why Choose This Product
MIKUNI's High Speed Jet combines cutting-edge technology with trusted reliability to give riders a competitive edge. Its robust build ensures long-term performance, while the streamlined design enhances fuel efficiency and throttle response. Perfect for racers and adventurers seeking uncompromising power and control.
| SKU | GM5DDD2942 |
|---|---|
| MPN | FN102221-137.5 |
| Brand | MIKUNI |
| Category | Jets |
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Featured Review
| Make | Model | Years |
|---|---|---|
| Various (Yamaha, Honda, Suzuki, Kawasaki) | Multiple carbureted models | 1980-2025 |
Frequently Asked Questions
Fits most Mikuni round-slide carbs like VM26-VM40, BS30-36, HSR42/45. Confirm your main jet size needed.
This is the high speed (main) jet, used for high RPM fueling.
Often yes, change needle and pilot jet too for complete tuning.
Proper sizing optimizes air/fuel ratio; results vary by setup and altitude.
Installation Guide
Difficulty
Easy
Est. Time
5 min
Tools Required
- Small flathead screwdriver
- Jet cleaning wire or compressed air
Pro Tips
- Remove carburetor float bowl to access. Clean jet thoroughly. Test plug chop method for tuning confirmation.
Common Mistakes to Avoid
- Not cleaning carb passages before install
- Incorrect jet size selection without testing
Comparison vs Stock/OEM
Direct OEM replacement or upgrade for Keihin/Honda carbs converted to Mikuni
Improvements
- Precise fuel metering for custom tuning
- Brass durability over stock
- Easy to source multiple sizes
Considerations
- Requires dyno or plug reading for optimal size
Durability & Warranty
Expected Lifespan
Indefinite with proper maintenance (clean every service)
Warranty
Limited manufacturer warranty (typically 1 year)
Maintenance
Clean with carb cleaner during every carb service (every 10-20 hours)
What Others Are Saying
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