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Start ShoppingMIKUNI FVM28/511-1.8 Needle Valve Round Pump - High-Performance Carburetor Fuel System Component
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Description
Upgrade your powersports engine's fuel delivery system with MIKUNI's precision-engineered FVM28/511-1.8 Needle Valve Round Pump. This critical component ensures consistent fuel flow, enhancing throttle response and overall engine performance for riders who demand reliability and power.
Key Features
- Exact Fit for MIKUNI Carburetors: Designed for seamless integration with original equipment, ensuring optimal fuel metering and system compatibility.
- High-Durability Construction: Made from corrosion-resistant materials to withstand harsh riding conditions and prolonged use.
- Smooth Fuel Flow Regulation: Precise valve control delivers consistent fuel delivery, preventing hesitation and ensuring peak engine performance.
Why Choose This Product
Whether you're modifying a classic motorcycle or tuning a high-performance off-road vehicle, this needle valve pump offers unmatched reliability. Its round pump design minimizes maintenance while maximizing efficiency, making it a must-have for riders who prioritize precision and power. Perfect for restoring vintage engines or enhancing modern powersports equipment, this component delivers the performance you expect from MIKUNI.
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Upgrade your powersports engine's fuel delivery system with MIKUNI's precision-engineered FVM28/511-1.8 Needle Valve Round Pump. This critical component ensures consistent fuel flow, enhancing throttle response and overall engine performance for riders who demand reliability and power.
Key Features
- Exact Fit for MIKUNI Carburetors: Designed for seamless integration with original equipment, ensuring optimal fuel metering and system compatibility.
- High-Durability Construction: Made from corrosion-resistant materials to withstand harsh riding conditions and prolonged use.
- Smooth Fuel Flow Regulation: Precise valve control delivers consistent fuel delivery, preventing hesitation and ensuring peak engine performance.
Why Choose This Product
Whether you're modifying a classic motorcycle or tuning a high-performance off-road vehicle, this needle valve pump offers unmatched reliability. Its round pump design minimizes maintenance while maximizing efficiency, making it a must-have for riders who prioritize precision and power. Perfect for restoring vintage engines or enhancing modern powersports equipment, this component delivers the performance you expect from MIKUNI.
| SKU | GM67AF201C |
|---|---|
| MPN | FVM28/511-1.8 |
| Brand | MIKUNI |
| Category | Intake/Carb/Fuel System |
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Featured Review
| Make | Model | Years |
|---|---|---|
| Yamaha | XT250, XT350, SR250, SR400 | 1980-2005 |
| Kawasaki | KDX200, KDX220, KLX250 | 1978-1999 |
| Suzuki | DR350, DRZ400 | 1985-2010 |
| Honda | XL250, XL350, XR250 | 1970-1990 |
Frequently Asked Questions
Yes, the FVM28/511-1.8 is the direct replacement needle valve for most Mikuni BS28 and VM28 carburetors used on 125-250cc bikes.
The number indicates fuel flow rate. 1.8 is standard for most trail and street applications; use 1.5 for leaner setups, 2.0 for richer.
This is an OEM Mikuni part, not aftermarket.
No, this is the needle valve only. The seat (needle jet seat) is sold separately if needed.
Installation Guide
Difficulty
Easy
Est. Time
15 min
Tools Required
- Small flathead screwdriver
- Needle nose pliers
- Carb cleaner
Pro Tips
- Use carb cleaner to lubricate the valve for smooth insertion. Test float height after install (should be 22-24mm for most BS28 carbs).
Common Mistakes to Avoid
- Damaging the Viton tip during installation
- Not cleaning carburetor bowl before install
Comparison vs Stock/OEM
Direct OEM replacement for factory Mikuni carbs; upgraded Viton rubber tip resists fuel degradation better than old neoprene
Improvements
- Prevents flooding/leaking
- More consistent fuel metering
- Longer life in ethanol fuels
Considerations
- Must match carb model exactly
Durability & Warranty
Expected Lifespan
5+ years or 10,000+ hours with proper maintenance
Warranty
Mikuni lifetime warranty against defects
Maintenance
Inspect annually; replace if tip swells or leaks
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