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Start ShoppingMIKUNI FVM28/486-55 Bleed Pilot Jets - Brass #55 Fuel Jet for 28mm Carburetors
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Description
Upgrade your carburetor's fuel delivery system with MIKUNI's premium bleed-type pilot jet. This #55 brass jet ensures precise fuel metering at idle and low speeds, delivering smoother engine performance and enhanced throttle response for riders who demand precision.
Key Features
- Brass Construction: Durable, corrosion-resistant material for long-lasting performance in harsh riding conditions.
- M5 x 0.75 Thread: Standard thread size for easy installation and compatibility with most 28mm carburetor setups.
- #55 Jet Size: Optimized fuel flow for fine-tuned idle and low-speed operation.
- Bleed-Type Design: Regulates fuel delivery to prevent flooding and ensure consistent engine performance.
Why Choose This Product
Engineers for high-performance powersports applications, these jets provide reliable fuel metering that enhances engine responsiveness and fuel efficiency. The brass material resists clogging and maintains accuracy over time, while the bleed-type design prevents rich mixtures during cold starts. Perfect for motorcycle, ATV, and UTV enthusiasts seeking precise control over their engine's fuel delivery.
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Upgrade your carburetor's fuel delivery system with MIKUNI's premium bleed-type pilot jet. This #55 brass jet ensures precise fuel metering at idle and low speeds, delivering smoother engine performance and enhanced throttle response for riders who demand precision.
Key Features
- Brass Construction: Durable, corrosion-resistant material for long-lasting performance in harsh riding conditions.
- M5 x 0.75 Thread: Standard thread size for easy installation and compatibility with most 28mm carburetor setups.
- #55 Jet Size: Optimized fuel flow for fine-tuned idle and low-speed operation.
- Bleed-Type Design: Regulates fuel delivery to prevent flooding and ensure consistent engine performance.
Why Choose This Product
Engineers for high-performance powersports applications, these jets provide reliable fuel metering that enhances engine responsiveness and fuel efficiency. The brass material resists clogging and maintains accuracy over time, while the bleed-type design prevents rich mixtures during cold starts. Perfect for motorcycle, ATV, and UTV enthusiasts seeking precise control over their engine's fuel delivery.
| SKU | GMAAD33DF1 |
|---|---|
| MPN | FVM28/486-55 |
| Brand | MIKUNI |
| Category | Jets |
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Featured Review
| Make | Model | Years |
|---|---|---|
| Suzuki | DR400/DR-Z400 | 1985-2005 |
| Kawasaki | KLX300/KLX400 | 1990-2010 |
| Yamaha | XT350/XT400 | 1980-2000 |
| Honda | XR400R | 1995-2015 |
Frequently Asked Questions
Designed for Mikuni FVM28 series carburetors found on many dual-sport and enduro bikes like Suzuki DR-Z400, Kawasaki KLX, Yamaha XT series.
Check your stock jet marking or use a jetting chart based on altitude, temperature, and mods. #55 is common for stock to mildly modified setups.
This is a bleed-type pilot jet (air bleed circuit) for smoother low-speed response.
Thread and size are Mikuni-specific; not interchangeable with Keihin or stock OEM carbs.
Installation Guide
Difficulty
Easy
Est. Time
10 min
Tools Required
- Small flathead screwdriver
- Jet removal tool or pick
- Carb cleaner
Pro Tips
- Remove carburetor fully for best access. Blow out passages with compressed air. Always sync jets with main and needle after install.
Common Mistakes to Avoid
- Not cleaning carb passages before install
- Incorrect jet size selection
- Overlooking float height adjustment
Comparison vs Stock/OEM
Direct replacement or upgrade for OEM pilot jets in Mikuni-equipped bikes
Improvements
- More precise fuel delivery
- Better idle quality
- Easier tuning for mods
Considerations
- Requires carb cleaning and re-tuning for optimal results
Durability & Warranty
Expected Lifespan
Indefinite with proper maintenance (jets rarely wear out)
Warranty
Limited lifetime from Mikuni against manufacturing defects
Maintenance
Inspect during carb service (every 20-50 hours); clean with carb cleaner, avoid abrasives
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