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Start ShoppingMIKUNI Hex Main Jets #500 - Precision Brass Jets for High-Performance Engines
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Description
Upgrade your engine's fuel delivery system with MIKUNI's precision-engineered hex main jets. These durable brass jets ensure optimal fuel-air mixture for maximum power and efficiency in two-stroke engines. Ideal for racers and tuners seeking precise control over engine performance.
Key Features
- Brass Construction: Corrosion-resistant material ensures long-lasting performance in harsh engine environments.
- Hex Head Design: Easy installation and secure fit with M5 x 0.75 threading for reliable fuel flow.
- Precision #500 Size: Accurately calibrated for balanced fuel delivery and smooth engine operation.
- Lightweight Build: Only 2 grams per jet reduces overall engine weight without compromising durability.
Why Choose This Product
MIKUNI jets deliver unmatched reliability and performance for two-stroke engines. The hex head design simplifies maintenance while the brass construction resists wear from fuel and heat. These jets are engineered to enhance throttle response, improve fuel efficiency, and maintain consistent power output across varying conditions. Whether you're racing or tuning for everyday performance, these jets provide the precision needed to elevate your engine's capabilities.
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Upgrade your engine's fuel delivery system with MIKUNI's precision-engineered hex main jets. These durable brass jets ensure optimal fuel-air mixture for maximum power and efficiency in two-stroke engines. Ideal for racers and tuners seeking precise control over engine performance.
Key Features
- Brass Construction: Corrosion-resistant material ensures long-lasting performance in harsh engine environments.
- Hex Head Design: Easy installation and secure fit with M5 x 0.75 threading for reliable fuel flow.
- Precision #500 Size: Accurately calibrated for balanced fuel delivery and smooth engine operation.
- Lightweight Build: Only 2 grams per jet reduces overall engine weight without compromising durability.
Why Choose This Product
MIKUNI jets deliver unmatched reliability and performance for two-stroke engines. The hex head design simplifies maintenance while the brass construction resists wear from fuel and heat. These jets are engineered to enhance throttle response, improve fuel efficiency, and maintain consistent power output across varying conditions. Whether you're racing or tuning for everyday performance, these jets provide the precision needed to elevate your engine's capabilities.
| SKU | GM759127CA |
|---|---|
| MPN | F4/042-500 |
| Brand | MIKUNI |
| Category | Jets |
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Featured Review
| Make | Model | Years |
|---|---|---|
| Various Japanese | Carbureted motorcycles/ATVs (e.g., Honda XR series, Yamaha YZ, Suzuki RM) | 1980-2025 |
| Kawasaki | KX series | 1990-2010 |
Frequently Asked Questions
Fits Mikuni VM26-VM34, PF30-PF39 series carburetors commonly found on Honda, Yamaha, Suzuki, Kawasaki 2-stroke/4-stroke bikes.
Yes, OEM Mikuni hex main jet, part number F4/042-500.
Single jet for tuning; buy multiple sizes for full jet kit.
No, carbureted applications only.
Installation Guide
Difficulty
Easy
Est. Time
5 min
Tools Required
- Small flathead screwdriver
- Jet wrench or hex key
Pro Tips
- Remove float bowl completely for access. Clean jet orifice with carb cleaner. Always re-jet in pairs for balance.
Common Mistakes to Avoid
- Not cleaning carb passages before install
- Incorrect jet size selection
Comparison vs Stock/OEM
Direct OEM replacement for factory Mikuni carbs
Improvements
- Precise fuel metering for altitude/temp changes
- Durable brass resists corrosion
Considerations
- None; identical to stock quality
Durability & Warranty
Expected Lifespan
Indefinite with proper tuning; does not wear out
Warranty
Mikuni lifetime against defects
Maintenance
Inspect/clean during carb service (every 20-50 hours)
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