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Start ShoppingMIKUNI FVM30/38-P-4 Needle Jet - High-Performance Carburetor Fuel System for Powersports Vehicles
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Description
Upgrade your powersports engine's fuel delivery system with the MIKUNI FVM30/38-P-4 Needle Jet. This high-performance component ensures precise fuel metering for improved throttle response, smoother power delivery, and consistent engine performance across a wide range of operating conditions.
Key Features
- Precision Fuel Metering: Advanced needle design delivers accurate fuel flow for optimal engine performance and fuel efficiency.
- Durable Construction: High-quality materials withstand extreme temperatures and harsh environments for long-lasting reliability.
- Easy Installation: Designed for seamless integration with existing carburetor systems, reducing installation time and complexity.
- Compatibility: Specifically engineered for MIKUNI carburetor systems, ensuring proper fitment and function.
Why Choose This Product
Whether you're tuning a motorcycle, ATV, or off-road vehicle, this needle jet offers unmatched control over fuel delivery. Its precision engineering helps maintain consistent air-fuel ratios, reducing emissions while maximizing power output. The durable construction ensures it withstands the rigors of high-performance riding, making it a trusted component for serious riders and mechanics alike.
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Upgrade your powersports engine's fuel delivery system with the MIKUNI FVM30/38-P-4 Needle Jet. This high-performance component ensures precise fuel metering for improved throttle response, smoother power delivery, and consistent engine performance across a wide range of operating conditions.
Key Features
- Precision Fuel Metering: Advanced needle design delivers accurate fuel flow for optimal engine performance and fuel efficiency.
- Durable Construction: High-quality materials withstand extreme temperatures and harsh environments for long-lasting reliability.
- Easy Installation: Designed for seamless integration with existing carburetor systems, reducing installation time and complexity.
- Compatibility: Specifically engineered for MIKUNI carburetor systems, ensuring proper fitment and function.
Why Choose This Product
Whether you're tuning a motorcycle, ATV, or off-road vehicle, this needle jet offers unmatched control over fuel delivery. Its precision engineering helps maintain consistent air-fuel ratios, reducing emissions while maximizing power output. The durable construction ensures it withstands the rigors of high-performance riding, making it a trusted component for serious riders and mechanics alike.| SKU | GMC20B15B9 |
|---|---|
| MPN | FVM30/38-P-4 |
| Brand | MIKUNI |
| Category | Intake/Carb/Fuel System |
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Featured Review
| Make | Model | Years |
|---|---|---|
| Various Japanese | VM series carbureted motorcycles (e.g., Yamaha XS650, Suzuki GS series, Kawasaki KZ series) | 1980-2020 |
| Honda | CB/CL series | 1990-2010 |
Frequently Asked Questions
Fits Mikuni VM30 and VM38 carburetors with P-4 jetting configuration.
This is an OEM-spec Mikuni part, genuine manufacturer replacement.
Often used with main jet and needle changes for tuning; check air/fuel ratio after install.
P-4 has specific emulsion holes and taper for mid-range fueling in VM series carbs.
Installation Guide
Difficulty
Easy
Est. Time
10 min
Tools Required
- Small flathead screwdriver
- Carburetor cleaning kit
- Compressed air
Pro Tips
- Soak carb in cleaner first; use carb slide tool for easy access; verify jet size markings
Common Mistakes to Avoid
- Not cleaning carb passages thoroughly before install
- Installing without removing old jet fully
Comparison vs Stock/OEM
Direct OEM replacement for worn factory needle jets
Improvements
- Restores precise fuel metering
- Better mid-throttle response
Considerations
- None; identical to stock specs
Durability & Warranty
Expected Lifespan
Indefinite with proper carb maintenance; 5+ years typical
Warranty
Mikuni lifetime warranty against defects
Maintenance
Inspect during annual carb cleaning; replace if passages clog
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