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Start ShoppingMIKUNI FVM28/511-2.0 Needle Valve Round Pump - Precision Fuel Delivery for Carbureted Engines
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Description
Upgrade your engine's fuel delivery system with MIKUNI's precision-engineered FVM28/511-2.0 Needle Valve Round Pump. This critical component ensures optimal fuel metering for responsive power delivery and consistent performance across a range of riding conditions.
Key Features
- Precision Needle Valve Design: Ensures accurate fuel flow control for smooth throttle response and efficient combustion.
- Round Pump Configuration: Optimized for compatibility with MIKUNI carburetor systems, delivering reliable fuel delivery under varying engine loads.
- Durable Construction: Made from high-quality materials to withstand harsh environments and prolonged use without degradation.
Why Choose This Product
Whether you're tuning a classic motorcycle or optimizing a modern off-road rig, this needle valve pump delivers unmatched reliability. Its precise fuel metering capabilities help maintain engine efficiency, while the robust design ensures long-term performance. Perfect for riders who demand consistent power output and trouble-free operation in demanding conditions.
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Upgrade your engine's fuel delivery system with MIKUNI's precision-engineered FVM28/511-2.0 Needle Valve Round Pump. This critical component ensures optimal fuel metering for responsive power delivery and consistent performance across a range of riding conditions.
Key Features
- Precision Needle Valve Design: Ensures accurate fuel flow control for smooth throttle response and efficient combustion.
- Round Pump Configuration: Optimized for compatibility with MIKUNI carburetor systems, delivering reliable fuel delivery under varying engine loads.
- Durable Construction: Made from high-quality materials to withstand harsh environments and prolonged use without degradation.
Why Choose This Product
Whether you're tuning a classic motorcycle or optimizing a modern off-road rig, this needle valve pump delivers unmatched reliability. Its precise fuel metering capabilities help maintain engine efficiency, while the robust design ensures long-term performance. Perfect for riders who demand consistent power output and trouble-free operation in demanding conditions.| SKU | GM2D9A252C |
|---|---|
| MPN | FVM28/511-2.0 |
| Brand | MIKUNI |
| Category | Intake/Carb/Fuel System |
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Featured Review
| Make | Model | Years |
|---|---|---|
| Suzuki | RM250, RMZ250, RM125, RMZ450 | 1980-2005 |
| Kawasaki | KX250, KX125 | 1990-2010 |
| Yamaha | YZ250, YZ125 | 1985-2000 |
| Honda | CR250R, CRF250R | 1995-2015 |
Frequently Asked Questions
Designed for Mikuni VM28 series carburetors, common on 125-450cc 2-stroke and 4-stroke motocross bikes from Suzuki, Kawasaki, Yamaha, Honda.
2.0 is a standard OEM-spec flow rate for most VM28 applications; upgrade to 2.5 for high-performance setups.
Yes, includes brass needle valve and Viton seat; pump diaphragm is round style.
Yes, if caused by worn needle/seat; inspect float height and diaphragm as well.
Installation Guide
Difficulty
Easy
Est. Time
15 min
Tools Required
- Small flathead screwdriver
- Phillips screwdriver
- Needle nose pliers
Pro Tips
- Clean carburetor bowl thoroughly before install
- Lubricate diaphragm with a tiny bit of fuel for easier seating
- Test for leaks after install by pressurizing float bowl
Common Mistakes to Avoid
- Not seating the pump diaphragm properly causing fuel leaks
- Over-tightening the valve seat
Comparison vs Stock/OEM
Direct OEM replacement for Mikuni-equipped bikes; identical to factory spec
Improvements
- New Viton materials resist ethanol fuel better than aged OEM
- Prevents flooding/leaking from wear
Considerations
- None - exact factory match
Durability & Warranty
Expected Lifespan
5+ years with proper maintenance; 100+ hours racing
Warranty
Limited lifetime from Mikuni against defects
Maintenance
Inspect annually; replace if leaks or sticking occur
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