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Start ShoppingMIKUNI FN100606-102.5 Low Speed Jet Carburetor - Precision Fuel Delivery for Powersports Engines
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Description
Upgrade your powersports engine's fuel delivery system with the MIKUNI FN100606-102.5 Low Speed Jet Carburetor. This precision-engineered component ensures optimal fuel-air mixture for improved throttle response, smoother power delivery, and consistent performance across a range of riding conditions.
Key Features
- High-Flow Design: Advanced internal passages maximize fuel flow for responsive acceleration and sustained power.
- Adjustable Jetting: Fine-tune fuel delivery for custom performance tuning and altitude compensation.
- Durable Construction: Cast aluminum housing resists corrosion and maintains precision in harsh environments.
- Sealed Diaphragm: Prevents fuel contamination and ensures consistent metering under varying pressures.
Why Choose This Product
Whether you're modifying a classic off-road rig or optimizing a modern sport bike, this MIKUNI Low Speed Jet delivers unmatched reliability and performance. Its compact design fits seamlessly into existing engine compartments, while the precision-machined components ensure long-term durability. Riders benefit from smoother idle characteristics, reduced fuel waste, and enhanced engine efficiency—making it an essential upgrade for serious powersports enthusiasts.
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Upgrade your powersports engine's fuel delivery system with the MIKUNI FN100606-102.5 Low Speed Jet Carburetor. This precision-engineered component ensures optimal fuel-air mixture for improved throttle response, smoother power delivery, and consistent performance across a range of riding conditions.
Key Features
- High-Flow Design: Advanced internal passages maximize fuel flow for responsive acceleration and sustained power.
- Adjustable Jetting: Fine-tune fuel delivery for custom performance tuning and altitude compensation.
- Durable Construction: Cast aluminum housing resists corrosion and maintains precision in harsh environments.
- Sealed Diaphragm: Prevents fuel contamination and ensures consistent metering under varying pressures.
Why Choose This Product
Whether you're modifying a classic off-road rig or optimizing a modern sport bike, this MIKUNI Low Speed Jet delivers unmatched reliability and performance. Its compact design fits seamlessly into existing engine compartments, while the precision-machined components ensure long-term durability. Riders benefit from smoother idle characteristics, reduced fuel waste, and enhanced engine efficiency—making it an essential upgrade for serious powersports enthusiasts.
| SKU | GMD491603F |
|---|---|
| MPN | FN100606-102.5 |
| Brand | MIKUNI |
| Category | Intake/Carb/Fuel System |
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Featured Review
| Make | Model | Years |
|---|---|---|
| Honda | CRF450R | 2004-2024 |
| Yamaha | YZ450F | 2003-2024 |
| KTM | 450 SX-F | 2005-2024 |
| Suzuki | RMZ450 | 1999-2024 |
| Kawasaki | KX450F | 2006-2024 |
Frequently Asked Questions
Fits Mikuni VM26-VM38 series carbs commonly found on 125cc-450cc 2-stroke/4-stroke dirt bikes.
This is a main (low speed) jet, not a pilot jet. Size 102.5 is for main circuit tuning.
Often yes - pair with needle, clip position, and pilot jet changes for complete tuning.
No, Mikuni jets have different threading. Confirm your carb model first.
102.5 flows slightly more fuel (~2-3% richer) for hotter climates or mods.
Installation Guide
Difficulty
Easy
Est. Time
5 min
Tools Required
- Small flathead screwdriver
- Jet wrench or needle nose pliers
Pro Tips
- Use a jetting chart for your elevation/altitude. Mark your current jet size before removal. Clean with carb cleaner only.
Common Mistakes to Avoid
- Dropping the tiny jet into the carb body
- Not cleaning the needle jet orifice before install
Comparison vs Stock/OEM
Direct replacement or upgrade for OEM Keihin/Mikuni jets in stock carbs
Improvements
- Precision machined for consistent flow
- Better corrosion resistance
- Ideal for aftermarket tuning
Considerations
- Requires dyno or plug chop tuning for optimal performance
Durability & Warranty
Expected Lifespan
Indefinite with proper cleaning (lasts engine life)
Warranty
Limited lifetime from Mikuni
Maintenance
Remove and clean during every carb service (every 10-20 hours)
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