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Start ShoppingMIKUNI FVM38/11-3.5 Needle Valve Round Pump - High-Performance Fuel System Component
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Description
Upgrade your powersports fuel system with MIKUNI's FVM38/11-3.5 Needle Valve Round Pump, designed for precise fuel metering and consistent engine performance. This critical component ensures smooth power delivery and reliable operation in high-performance motorcycles and engines.
Key Features
- Precision Needle Valve Design: Ensures accurate fuel flow control for optimal engine performance and fuel efficiency.
- Durable Round Pump Construction: Built to withstand harsh conditions with corrosion-resistant materials for long-lasting reliability.
- Compatibility: Specifically engineered for MIKUNI carburetor systems, ensuring seamless integration with existing fuel delivery components.
- Easy Installation: Streamlined design allows for straightforward replacement without compromising system integrity.
Why Choose This Product
Whether you're tuning a high-performance motorcycle or maintaining a classic powersport vehicle, this needle valve round pump delivers consistent fuel delivery for enhanced throttle response and power output. Its robust construction reduces maintenance needs, while the precise engineering ensures compatibility with MIKUNI's advanced fuel system technology. Upgrade to this trusted component for dependable performance in demanding riding conditions.
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Upgrade your powersports fuel system with MIKUNI's FVM38/11-3.5 Needle Valve Round Pump, designed for precise fuel metering and consistent engine performance. This critical component ensures smooth power delivery and reliable operation in high-performance motorcycles and engines.
Key Features
- Precision Needle Valve Design: Ensures accurate fuel flow control for optimal engine performance and fuel efficiency.
- Durable Round Pump Construction: Built to withstand harsh conditions with corrosion-resistant materials for long-lasting reliability.
- Compatibility: Specifically engineered for MIKUNI carburetor systems, ensuring seamless integration with existing fuel delivery components.
- Easy Installation: Streamlined design allows for straightforward replacement without compromising system integrity.
Why Choose This Product
Whether you're tuning a high-performance motorcycle or maintaining a classic powersport vehicle, this needle valve round pump delivers consistent fuel delivery for enhanced throttle response and power output. Its robust construction reduces maintenance needs, while the precise engineering ensures compatibility with MIKUNI's advanced fuel system technology. Upgrade to this trusted component for dependable performance in demanding riding conditions.| SKU | GM110269E7 |
|---|---|
| MPN | FVM38/11-3.5 |
| Brand | MIKUNI |
| Category | Intake/Carb/Fuel System |
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Featured Review
| Make | Model | Years |
|---|---|---|
| Various Japanese | TM38/BS38/FVM38 carbureted models (e.g., Yamaha YZ/WR, Honda CRF, Kawasaki KX) | 2000-2024 |
| Suzuki | RM250/RM-Z250, RMX250 | 1998-2010 |
Frequently Asked Questions
Fits Mikuni TM38, BS38, FVM38 series carbs common on 2-stroke/4-stroke dirt bikes. Check your carb model.
3.5 has higher fuel flow for modified engines or high altitudes to prevent lean conditions.
No, needle valve only. Seat sold separately if needed (Mikuni 4G40-14101).
Universal for both; used in many Yamaha, Honda, Suzuki, Kawasaki models.
Installation Guide
Difficulty
Easy
Est. Time
15 min
Tools Required
- Small flathead screwdriver
- needle nose pliers
- carb cleaner
Pro Tips
- Remove float bowl first, inspect seat for wear, use carb cleaner on o-rings, test float height after install
Common Mistakes to Avoid
- Not cleaning seat properly leading to leaks
- Damaging Viton tip during install
Comparison vs Stock/OEM
Aftermarket Mikuni upgrade over OEM; larger 3.5 pump vs typical 2.5/3.0 stock
Improvements
- Higher fuel delivery reduces lean bogging
- More durable Viton tip resists alcohol fuels
- Better for jetting/mods
Considerations
- May require rejetting if swapping from smaller size
Durability & Warranty
Expected Lifespan
2-5 years or 100+ hours racing with proper jetting
Warranty
Limited lifetime from Mikuni (defect only)
Maintenance
Inspect annually; clean during carb rebuilds; replace if tip swells
What Others Are Saying
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