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Start ShoppingMIKUNI FM28/1001-40 Bleed Pilot Jets - Precision Fuel Control for High-Performance Engines
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Description
Achieve perfect fuel-air balance with MIKUNI's FM28/1001-40 Bleed Pilot Jets, designed for riders who demand precision and performance from their engines. These critical components ensure smooth idling, responsive throttle response, and consistent power delivery across a wide range of operating conditions.
Key Features
- Stainless Steel Construction: Corrosion-resistant material ensures long-lasting durability in harsh environments.
- Exact Fuel Flow Calibration: Precisely engineered for optimal fuel metering at low RPMs and idle speeds.
- Universal Compatibility: Designed to fit standard MIKUNI carburetor setups for motorcycles, ATVs, and off-road vehicles.
- Easy Installation: Streamlined design allows for quick replacement without compromising performance.
Why Choose This Product
Whether you're tuning a high-performance motorcycle or optimizing an off-road vehicle, these bleed pilot jets deliver unmatched reliability and precision. Their advanced design minimizes fuel vapor lock risks while maintaining consistent fuel flow, ensuring your engine runs smoothly under all conditions. The durable stainless steel construction resists clogging and corrosion, reducing maintenance needs and extending service life. With precise fuel metering, riders experience improved throttle response, smoother power delivery, and enhanced fuel efficiency—making these jets an essential upgrade for serious riders.
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Achieve perfect fuel-air balance with MIKUNI's FM28/1001-40 Bleed Pilot Jets, designed for riders who demand precision and performance from their engines. These critical components ensure smooth idling, responsive throttle response, and consistent power delivery across a wide range of operating conditions.
Key Features
- Stainless Steel Construction: Corrosion-resistant material ensures long-lasting durability in harsh environments.
- Exact Fuel Flow Calibration: Precisely engineered for optimal fuel metering at low RPMs and idle speeds.
- Universal Compatibility: Designed to fit standard MIKUNI carburetor setups for motorcycles, ATVs, and off-road vehicles.
- Easy Installation: Streamlined design allows for quick replacement without compromising performance.
Why Choose This Product
Whether you're tuning a high-performance motorcycle or optimizing an off-road vehicle, these bleed pilot jets deliver unmatched reliability and precision. Their advanced design minimizes fuel vapor lock risks while maintaining consistent fuel flow, ensuring your engine runs smoothly under all conditions. The durable stainless steel construction resists clogging and corrosion, reducing maintenance needs and extending service life. With precise fuel metering, riders experience improved throttle response, smoother power delivery, and enhanced fuel efficiency—making these jets an essential upgrade for serious riders.
| SKU | GM2A04B837 |
|---|---|
| MPN | FM28/1001-40 |
| Brand | MIKUNI |
| Category | Jets |
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Featured Review
| Make | Model | Years |
|---|---|---|
| Various Japanese | TM/VM/P series carbs (e.g., Yamaha YZ, Honda CR, Kawasaki KX) | 1980-2025 |
| Suzuki | RM250/ RMZ250/ DRZ400 | 1990-2010 |
Frequently Asked Questions
Designed for Mikuni 28mm carbs like TM28, VM28, HSR28. Check your carb model markings.
Use Mikuni jet chart based on engine size, mods, altitude, and temp. #1001-40 is mid-range for 250-450cc 2-strokes/4-strokes.
Genuine Mikuni OEM replacement part.
Yes, bleed pilot jets adjust air/fuel for high altitude or lean conditions.
Installation Guide
Difficulty
Easy
Est. Time
15 min
Tools Required
- Small flathead screwdriver
- Jet cleaning wire or carb cleaner
Pro Tips
- Remove carb, unscrew old pilot with screwdriver, blow out passages with compressed air. Always rejet in pairs for main/pilot
Common Mistakes to Avoid
- Not cleaning carb passages before install
- Incorrect jet size selection for altitude/temp
Comparison vs Stock/OEM
Direct OEM replacement for worn/stock pilots in Mikuni carbs
Improvements
- Precise fuel metering for better idle/response
- Adjustable bleed for tuning
Considerations
- None - identical to factory spec
Durability & Warranty
Expected Lifespan
Indefinite with proper cleaning (carb lasts 5+ years)
Warranty
Mikuni lifetime against defects
Maintenance
Clean with carb cleaner every 10-20 hours; inspect during rejet
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