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Start ShoppingMIKUNI FVM11/22-72.5 Round Main Jets - High-Performance Fuel Jet Kit for Racing & Off-Road
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Description
Upgrade your engine's fuel delivery system with MIKUNI's precision-crafted Round Main Jets designed for FVM11/22 carburetors. These high-performance jets optimize fuel-air mixture ratios, delivering consistent power and responsiveness for racing, off-road, and extreme terrain applications.
Key Features
- Precision-Crafted Round Main Jets: Engineered for optimal fuel flow control and combustion efficiency, ensuring peak engine performance under varying conditions.
- Engine Compatibility: Specifically designed for MIKUNI FVM11/22 carburetor systems, ensuring seamless integration with existing engine setups.
- Durable Stainless Steel Construction: Resists corrosion and wear, maintaining accuracy and reliability in harsh environments.
- Adjustable Fuel Flow: Fine-tune fuel delivery for custom tuning, allowing riders to adapt to different fuel types and riding conditions.
Why Choose This Product
Whether you're competing in races or conquering rugged terrain, these MIKUNI jets provide the precision and reliability needed to maximize engine performance. Their durable design ensures long-term use, while the adjustable flow capabilities offer flexibility for tuning. Ideal for riders seeking to enhance power output, improve throttle response, and achieve consistent performance in demanding conditions.
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Upgrade your engine's fuel delivery system with MIKUNI's precision-crafted Round Main Jets designed for FVM11/22 carburetors. These high-performance jets optimize fuel-air mixture ratios, delivering consistent power and responsiveness for racing, off-road, and extreme terrain applications.
Key Features
- Precision-Crafted Round Main Jets: Engineered for optimal fuel flow control and combustion efficiency, ensuring peak engine performance under varying conditions.
- Engine Compatibility: Specifically designed for MIKUNI FVM11/22 carburetor systems, ensuring seamless integration with existing engine setups.
- Durable Stainless Steel Construction: Resists corrosion and wear, maintaining accuracy and reliability in harsh environments.
- Adjustable Fuel Flow: Fine-tune fuel delivery for custom tuning, allowing riders to adapt to different fuel types and riding conditions.
Why Choose This Product
Whether you're competing in races or conquering rugged terrain, these MIKUNI jets provide the precision and reliability needed to maximize engine performance. Their durable design ensures long-term use, while the adjustable flow capabilities offer flexibility for tuning. Ideal for riders seeking to enhance power output, improve throttle response, and achieve consistent performance in demanding conditions.
| SKU | GM78AA6238 |
|---|---|
| MPN | FVM11/22-72.5 |
| Brand | MIKUNI |
| Category | Jets |
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Featured Review
| Make | Model | Years |
|---|---|---|
| Various Japanese | VM series carbureted motorcycles/ATVs | 1980-2025 |
| Honda | XR250R, XR400R, CRF450R (pre-EFI) | 1990-2010 |
| Yamaha | YZ125/250, WR250, TTR125 | 1985-2020 |
| Kawasaki | KX125/250, KLX250 | 1990-2015 |
Frequently Asked Questions
The main jet controls fuel flow at mid-range to full throttle operation. A larger number (like 72.5) means more fuel flow, while smaller numbers restrict fuel. Proper jetting is critical for performance and engine health.
Jet selection depends on altitude, temperature, engine modifications, and carburetor tuning. Start with the manufacturer's recommendation for your specific carburetor and application, then adjust based on plug color and performance testing.
No. The FVM11/22 designation is specific to certain Mikuni VM series carburetors. Always verify your carburetor model number matches before purchasing. Using wrong jets can cause poor performance or engine damage.
Round jets are used in round-slide carburetors (like VM series), while flat-slide jets are for flat-slide carburetors. They are not interchangeable.
Yes. Performance modifications (exhaust, intake, porting) typically require rejetting to maintain proper air-fuel ratio. Consult tuning guides specific to your modifications.
Installation Guide
Difficulty
Easy
Est. Time
15 min
Tools Required
- Carburetor removal tools (varies by application)
- Small screwdriver or jet removal tool
- Clean workspace
- Carburetor cleaner (optional but recommended)
Pro Tips
- Keep old jet for reference or comparison
- Clean carburetor passages while you have it apart
- Test run after installation to verify jetting is correct
- Take photos during disassembly to aid reassembly
- Main jet size affects mid-range to full throttle performance
Common Mistakes to Avoid
- Forcing the jet - they should slide in smoothly
- Not cleaning the jet seat before installation
- Installing wrong size jet without testing
- Losing small O-rings or washers during removal
Comparison vs Stock/OEM
Improvements
- Enables custom jetting for specific conditions (altitude, temperature, modifications)
- Allows performance optimization
- Supports engine modifications
Considerations
- Requires carburetor knowledge to select correct size
- Improper jetting can cause poor performance or engine damage
- May require multiple jets to find optimal setting
Durability & Warranty
Expected Lifespan
Indefinite if properly maintained; brass construction is durable
Warranty
Typically covered under manufacturer warranty (usually 1 year)
Maintenance
No maintenance required; inspect for damage or clogging during carburetor service
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