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Start ShoppingMIKUNI Large Round Main Jet 185 - High-Performance Brass Fuel Jet for Powersports
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Description
Upgrade your powersports engine's fuel delivery system with the MIKUNI Large Round Main Jet 185. This high-performance brass jet delivers precise fuel flow control, ensuring consistent power output and smooth engine operation across a range of riding conditions.
Key Features
- 185 Jet Size: Optimized for balanced fuel-air mixture in high-performance engines.
- Brass Construction: Durable, corrosion-resistant material for long-lasting reliability.
- Clip-On Design: Quick installation with 0.236 inch (6mm) orifice diameter for seamless integration.
- Lightweight Build: Only 0.1 oz (3g) for minimal impact on engine performance.
Why Choose This Product
Engineers and riders rely on MIKUNI jets for their precision engineering and compatibility with modern powersports engines. This Large Round Main Jet 185 offers superior fuel flow control, reducing hesitation and improving throttle response. The brass material resists wear from fuel and heat, while the clip-on style simplifies maintenance and tuning. Whether you're modifying a dirt bike, ATV, or off-road vehicle, this jet ensures optimal engine performance and fuel efficiency.
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Upgrade your powersports engine's fuel delivery system with the MIKUNI Large Round Main Jet 185. This high-performance brass jet delivers precise fuel flow control, ensuring consistent power output and smooth engine operation across a range of riding conditions.
Key Features
- 185 Jet Size: Optimized for balanced fuel-air mixture in high-performance engines.
- Brass Construction: Durable, corrosion-resistant material for long-lasting reliability.
- Clip-On Design: Quick installation with 0.236 inch (6mm) orifice diameter for seamless integration.
- Lightweight Build: Only 0.1 oz (3g) for minimal impact on engine performance.
Why Choose This Product
Engineers and riders rely on MIKUNI jets for their precision engineering and compatibility with modern powersports engines. This Large Round Main Jet 185 offers superior fuel flow control, reducing hesitation and improving throttle response. The brass material resists wear from fuel and heat, while the clip-on style simplifies maintenance and tuning. Whether you're modifying a dirt bike, ATV, or off-road vehicle, this jet ensures optimal engine performance and fuel efficiency.
| SKU | GM64CFFFC9 |
|---|---|
| MPN | FN100604-185 |
| Brand | MIKUNI |
| Category | Jets |
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Featured Review
| Make | Model | Years |
|---|---|---|
| Various Japanese | Models with Mikuni VM/PF/BS carburetors | 1980-2025 |
| Yamaha | XT600, YZ250F, WR250F | 1990-2010 |
| Suzuki | DR-Z400, RM250, DR650 | 1985-2020 |
| Kawasaki | KLX300, KX250F | 1995-2025 |
| Honda | CRF450R, XR650L | 2000-2024 |
Frequently Asked Questions
Fits Mikuni VM, PF, BS series carbs with large round main jet port (6mm). Check your carb model.
Use plug reading, EGT gauge, or jet kit chart based on mods, altitude, temp. Start 5 sizes richer than stock.
Yes, large round (FN100604) vs small round (VM28/880). Confirm your carb type.
No, Keihin uses different jet threading. Mikuni-specific.
Installation Guide
Difficulty
Easy
Est. Time
10 min
Tools Required
- Small flathead screwdriver
- Jet cleaning wire or carb cleaner
Pro Tips
- Remove float bowl completely for access. Clean jet thoroughly. Test plug chop after install to verify fueling
Common Mistakes to Avoid
- Not cleaning carb passages before install
- Incorrect jet size selection causing lean/rich conditions
Comparison vs Stock/OEM
Direct OEM replacement or upgrade for Mikuni-equipped bikes; identical to factory jets
Improvements
- Precise fuel metering for tuning
- Consistent flow over worn stock jets
Considerations
- Requires rejetting knowledge; not plug-and-play without testing
Durability & Warranty
Expected Lifespan
Indefinite with proper cleaning; replace if corroded or damaged
Warranty
Limited manufacturer warranty against defects
Maintenance
Clean with carb cleaner every service; inspect during rejetting
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