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Start ShoppingMIKUNI FVM28/163-2.5 Needle Valve Round Pump - High-Performance Fuel System Component
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Description
Upgrade your motorcycle's fuel system with MIKUNI's FVM28/163-2.5 Needle Valve Round Pump, designed for precise fuel metering and consistent engine performance. This critical component ensures smooth power delivery and reliable operation across a range of riding conditions.
Key Features
- High-Precision Needle Valve: Ensures accurate fuel flow control for optimal engine performance and fuel efficiency.
- Durable Round Pump Design: Constructed from high-quality materials to withstand harsh environments and prolonged use.
- Universal Compatibility: Fits most MIKUNI carburetor systems, making it a versatile upgrade for various powersports applications.
- Easy Installation: Streamlined design allows for straightforward replacement without complex modifications.
- Enhanced Fuel Flow: Optimized internal geometry improves fuel delivery consistency and throttle response.
Why Choose This Product
Whether you're tuning a racing bike or maintaining a daily rider, this needle valve pump delivers reliable performance with minimal maintenance. Its precision engineering ensures smooth fuel metering, reducing engine hesitation and improving overall drivability. The robust construction makes it ideal for both street and off-road use, while the universal fitment simplifies integration into existing fuel systems. Upgrade to MIKUNI's trusted design for a noticeable improvement in power delivery and fuel efficiency.
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Upgrade your motorcycle's fuel system with MIKUNI's FVM28/163-2.5 Needle Valve Round Pump, designed for precise fuel metering and consistent engine performance. This critical component ensures smooth power delivery and reliable operation across a range of riding conditions.
Key Features
- High-Precision Needle Valve: Ensures accurate fuel flow control for optimal engine performance and fuel efficiency.
- Durable Round Pump Design: Constructed from high-quality materials to withstand harsh environments and prolonged use.
- Universal Compatibility: Fits most MIKUNI carburetor systems, making it a versatile upgrade for various powersports applications.
- Easy Installation: Streamlined design allows for straightforward replacement without complex modifications.
- Enhanced Fuel Flow: Optimized internal geometry improves fuel delivery consistency and throttle response.
Why Choose This Product
Whether you're tuning a racing bike or maintaining a daily rider, this needle valve pump delivers reliable performance with minimal maintenance. Its precision engineering ensures smooth fuel metering, reducing engine hesitation and improving overall drivability. The robust construction makes it ideal for both street and off-road use, while the universal fitment simplifies integration into existing fuel systems. Upgrade to MIKUNI's trusted design for a noticeable improvement in power delivery and fuel efficiency.| SKU | GMB8949B6C |
|---|---|
| MPN | FVM28/163-2.5 |
| Brand | MIKUNI |
| Category | Intake/Carb/Fuel System |
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Featured Review
| Make | Model | Years |
|---|---|---|
| Suzuki | DR-Z400 | 1985-2005 |
| Honda | XR400R | 1990-2010 |
| Various | VM28 carbureted motorcycles/ATVs | 1980-2020 |
Frequently Asked Questions
Yes, this is the direct OEM replacement needle valve for Mikuni VM28/163 series carburetors.
Round pump valves provide better fuel delivery for performance applications and high-altitude use.
Yes, always check and adjust float height to Mikuni specs (typically 22-24mm) after installation.
Yes, the Viton tip is ethanol resistant.
Installation Guide
Difficulty
Easy
Est. Time
15 min
Tools Required
- Small flathead screwdriver
- Needle nose pliers
- Carb cleaner
Pro Tips
- Remove carburetor from bike for easier access
- Inspect float height after installation
- Use carb cleaner to clean mating surfaces
Common Mistakes to Avoid
- Not draining float bowl first
- Damaging the Viton tip during installation
Comparison vs Stock/OEM
Direct OEM replacement part from Mikuni
Improvements
- Higher flow rate (2.5g/min vs 1.5g/min stock)
- Improved pump diaphragm for consistent fuel delivery
- Better sealing with Viton materials
Considerations
- Genuine Mikuni - matches or exceeds factory specs
Durability & Warranty
Expected Lifespan
3-5 years typical use / 10,000+ hours
Warranty
Limited lifetime manufacturer warranty
Maintenance
Inspect annually, replace if pump fails to deliver fuel
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