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Start ShoppingMIKUNI Hex Main Jets #310 - Precision Brass Fuel Jets for High-Performance Powersports Engines
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Description
Upgrade your powersports engine's fuel delivery system with MIKUNI's precision-crafted Hex Main Jets. These durable brass jets deliver consistent fuel flow for enhanced performance, responsiveness, and reliability in high-output engines.
Key Features
- Brass Construction: Corrosion-resistant material ensures long-lasting performance in demanding environments.
- #310 Jet Size: Optimized flow rate for balanced power delivery and fuel efficiency.
- Hex Thread Design: 5mm x 0.75mm pitch ensures secure, leak-free installation in MIKUNI carburetors.
- Compact Dimensions: 10mm diameter head and 12mm length fit precisely in carburetor housings.
- Lightweight Build: Just 1 gram reduces overall system weight without compromising durability.
Why Choose This Product
These jets are engineered for riders who demand precision and reliability. The brass material resists clogging and corrosion, while the hex thread ensures easy installation and secure fitment. Perfect for tuning high-performance engines, these jets deliver consistent fuel flow for improved throttle response and power output. Whether you're modifying a dirt bike, ATV, or off-road motorcycle, these jets provide the accuracy needed for optimal engine performance.
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Upgrade your powersports engine's fuel delivery system with MIKUNI's precision-crafted Hex Main Jets. These durable brass jets deliver consistent fuel flow for enhanced performance, responsiveness, and reliability in high-output engines.
Key Features
- Brass Construction: Corrosion-resistant material ensures long-lasting performance in demanding environments.
- #310 Jet Size: Optimized flow rate for balanced power delivery and fuel efficiency.
- Hex Thread Design: 5mm x 0.75mm pitch ensures secure, leak-free installation in MIKUNI carburetors.
- Compact Dimensions: 10mm diameter head and 12mm length fit precisely in carburetor housings.
- Lightweight Build: Just 1 gram reduces overall system weight without compromising durability.
Why Choose This Product
These jets are engineered for riders who demand precision and reliability. The brass material resists clogging and corrosion, while the hex thread ensures easy installation and secure fitment. Perfect for tuning high-performance engines, these jets deliver consistent fuel flow for improved throttle response and power output. Whether you're modifying a dirt bike, ATV, or off-road motorcycle, these jets provide the accuracy needed for optimal engine performance.| SKU | GMF1C14B10 |
|---|---|
| MPN | F4/042-310 |
| Brand | MIKUNI |
| Category | Jets |
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Featured Review
| Make | Model | Years |
|---|---|---|
| Various (Suzuki, Yamaha, Kawasaki, Honda) | Multiple carbureted models (e.g., Suzuki RM250, Yamaha YZ250, Kawasaki KX250) | 1980-2025 |
Frequently Asked Questions
Fits most Mikuni round-slide carbs like VM26-VM34, BS32/36/40, TM series. Confirm your carb model.
Check your current jet or use a jet kit calculator based on mods, altitude, and temperature.
Hex jets have a hex head for easier removal/install without special tools.
No, Mikuni jets are not interchangeable with Keihin due to different threading.
Installation Guide
Difficulty
Easy
Est. Time
5 min
Tools Required
- Flathead screwdriver
- 12-point socket (optional for hex)
Pro Tips
- Use carb cleaner to remove old jet debris. Test plug chop after install to verify fueling
Common Mistakes to Avoid
- Installing wrong jet size
- Not cleaning carb passages before install
Comparison vs Stock/OEM
Direct OEM replacement or performance upgrade for stock brass jets
Improvements
- Precision machined for consistent flow
- Easier to service with hex head
- Corrosion resistant brass construction
Considerations
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Durability & Warranty
Expected Lifespan
Indefinite (does not wear out; replace only for tuning changes)
Warranty
Limited lifetime (material defect only)
Maintenance
Inspect during carb cleaning; replace if threads damaged
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