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Start ShoppingMIKUNI FVM28/486-25 Bleed Pilot Jets - Precision Fuel Delivery for High-Performance Engines
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Description
Upgrade your carburetor system with MIKUNI's precision-engineered bleed pilot jets, designed to deliver flawless fuel-air mixture control for maximum engine performance and efficiency.
Key Features
- Exact Fuel Flow Calibration: Ensures optimal fuel delivery for consistent power output and smooth throttle response.
- High-Durability Construction: Precision-machined brass components resist corrosion and maintain accuracy under extreme operating conditions.
- Seamless Compatibility: Engineered for direct fit with MIKUNI carburetor systems, eliminating installation guesswork.
Why Choose This Product
These bleed pilot jets are essential for riders demanding peak engine performance. Their precise calibration improves fuel efficiency, reduces emissions, and enhances throttle responsiveness. The durable brass construction ensures long-term reliability, while the streamlined design simplifies maintenance and tuning. Perfect for motocross, off-road, and high-performance street bikes seeking precise fuel delivery control.
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Upgrade your carburetor system with MIKUNI's precision-engineered bleed pilot jets, designed to deliver flawless fuel-air mixture control for maximum engine performance and efficiency.
Key Features
- Exact Fuel Flow Calibration: Ensures optimal fuel delivery for consistent power output and smooth throttle response.
- High-Durability Construction: Precision-machined brass components resist corrosion and maintain accuracy under extreme operating conditions.
- Seamless Compatibility: Engineered for direct fit with MIKUNI carburetor systems, eliminating installation guesswork.
Why Choose This Product
These bleed pilot jets are essential for riders demanding peak engine performance. Their precise calibration improves fuel efficiency, reduces emissions, and enhances throttle responsiveness. The durable brass construction ensures long-term reliability, while the streamlined design simplifies maintenance and tuning. Perfect for motocross, off-road, and high-performance street bikes seeking precise fuel delivery control.
| SKU | GM10ADE010 |
|---|---|
| MPN | FVM28/486-25 |
| Brand | MIKUNI |
| Category | Jets |
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Featured Review
| Make | Model | Years |
|---|---|---|
| Various Japanese | Carbureted motorcycles/ATVs (VM, VM2, VM4 series carbs) | 1980-2025 |
| Suzuki | DR-Z400, RM250/400 | 1990-2010 |
| Yamaha | XT600, YZ250/400 | 1985-2005 |
Frequently Asked Questions
Fits Mikuni VM series (VM26-VM44), BS series, and many aftermarket carbs with M5x0.75 thread. Check your carb model.
Bleed jets have a small hole to meter air into the pilot circuit, improving low-speed throttle response and reducing bogging.
Often yes, for complete tuning. Match pilot to your elevation, temp, and mods (exhaust/air filter).
Yes, OEM Mikuni part number FVM28/486-25, made in Japan.
Equivalent to 0.25mm effective flow; smaller number = leaner low-end mixture.
Installation Guide
Difficulty
Easy
Est. Time
10 min
Tools Required
- Small flathead screwdriver
- Jet removal tool or needle-nose pliers
- Carb cleaner
Pro Tips
- Remove carb from bike for better access. Blow out passages with compressed air. Start with one size larger/smaller and test ride.
Common Mistakes to Avoid
- Dropping tiny jet into carb body (use parts tray)
- Not cleaning carb passages before install
Comparison vs Stock/OEM
Aftermarket tuning upgrade over stock non-bleed pilots in many OEM carbs
Improvements
- Better low-speed response
- Easier tuning for mods/altitude
- Reduces flat spots
Considerations
- Requires dyno or plug chop tuning for best results
Durability & Warranty
Expected Lifespan
Indefinite with proper install (brass doesn't wear)
Warranty
Mikuni lifetime against defects
Maintenance
Inspect during annual carb service; clean if gummed up
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