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Start ShoppingMIKUNI FVM28/133 Main Jet Plug - Brass Intake Carburetor Fuel System Component
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Description
Upgrade your Mikuni carburetor's fuel delivery system with this high-precision main jet plug. Designed for 28mm Mikuni carburetors, this brass component ensures consistent fuel flow, reliable performance, and easy maintenance for riders seeking peak engine efficiency.
Key Features
- Material: Brass - Corrosion-resistant construction for long-lasting durability in harsh engine environments
- Thread Size: M5 x 0.75 - Precision-engineered threads for seamless compatibility with Mikuni carburetor systems
- Weight: 0.1 oz (approx.) - Lightweight design reduces strain on engine components without compromising structural integrity
- Dimensions: 28mm Compatibility - Perfect fit for Mikuni carburetors requiring main jet adjustments
Why Choose This Product
Whether you're tuning a motorcycle, off-road vehicle, or high-performance engine, this main jet plug delivers unmatched reliability. Its brass construction resists corrosion and maintains dimensional stability under extreme temperatures, ensuring consistent fuel metering. The M5 x 0.75 thread pattern guarantees secure installation, while the compact 0.1 oz weight minimizes unnecessary engine load. Ideal for mechanics and riders who demand precision in fuel system calibration, this component helps optimize horsepower, fuel efficiency, and overall engine performance. Replace worn-out jets or use as part of carburetor rebuilds to restore factory specifications and enhance engine responsiveness.
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Upgrade your Mikuni carburetor's fuel delivery system with this high-precision main jet plug. Designed for 28mm Mikuni carburetors, this brass component ensures consistent fuel flow, reliable performance, and easy maintenance for riders seeking peak engine efficiency.
Key Features
- Material: Brass - Corrosion-resistant construction for long-lasting durability in harsh engine environments
- Thread Size: M5 x 0.75 - Precision-engineered threads for seamless compatibility with Mikuni carburetor systems
- Weight: 0.1 oz (approx.) - Lightweight design reduces strain on engine components without compromising structural integrity
- Dimensions: 28mm Compatibility - Perfect fit for Mikuni carburetors requiring main jet adjustments
Why Choose This Product
Whether you're tuning a motorcycle, off-road vehicle, or high-performance engine, this main jet plug delivers unmatched reliability. Its brass construction resists corrosion and maintains dimensional stability under extreme temperatures, ensuring consistent fuel metering. The M5 x 0.75 thread pattern guarantees secure installation, while the compact 0.1 oz weight minimizes unnecessary engine load. Ideal for mechanics and riders who demand precision in fuel system calibration, this component helps optimize horsepower, fuel efficiency, and overall engine performance. Replace worn-out jets or use as part of carburetor rebuilds to restore factory specifications and enhance engine responsiveness.| SKU | GMFCB696B8 |
|---|---|
| MPN | FVM28/133 |
| Brand | MIKUNI |
| Category | Intake/Carb/Fuel System |
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Featured Review
| Make | Model | Years |
|---|---|---|
| Various Japanese | TM28/TM28J/TM28P carbureted models (e.g., Yamaha YZ, Suzuki RM, Kawasaki KX) | 1980-2005 |
| Honda | CR125R, CR250R | 1990-2010 |
Frequently Asked Questions
Designed for Mikuni TM28, FVM28 series carburetors on 2-stroke dirt bikes.
Yes, it's the setscrew/plug that secures the main jet in the float bowl.
Yes, if equipped with stock Mikuni TM28 carb.
Brass for durability and corrosion resistance.
Installation Guide
Difficulty
Easy
Est. Time
5 min
Tools Required
- Small flathead screwdriver or hex key (2.5mm)
Pro Tips
- Clean jet seat before installation. Use thread locker sparingly if reusing
Common Mistakes to Avoid
- Cross-threading due to forcing it in at wrong angle
Comparison vs Stock/OEM
Direct OEM replacement or equivalent for Mikuni-equipped bikes
Improvements
- Precise threading prevents leaks
- Corrosion-resistant brass vs potential aluminum wear
Considerations
- None - identical function to OEM
Durability & Warranty
Expected Lifespan
Bike lifetime with proper care
Warranty
Manufacturer defect warranty (typically 1 year)
Maintenance
Inspect during carb cleaning; replace if threads damaged
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