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Start ShoppingMIKUNI FN100604-82.5 Large Round Main Jets - Precision Fuel Delivery for High-Performance Engines
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Description
Upgrade your engine's fuel delivery system with MIKUNI's Large Round Main Jets. These precision-crafted components ensure accurate fuel metering, enhancing power output and throttle response for a smoother, more efficient ride.
Key Features
- High-Precision Machining: Ensures consistent fuel flow for optimal engine performance.
- Durable Stainless Steel Construction: Resists corrosion and maintains accuracy in harsh conditions.
- Compatibility: Designed for MIKUNI carburetor systems to ensure seamless integration.
- Easy Installation: Streamlined design for quick replacement without professional assistance.
- Adjustable Flow Rates: Allows customization for different riding conditions and fuel requirements.
Why Choose This Product
These main jets are engineered to deliver reliable performance across a range of power sports equipment, from motorcycles to ATVs. Their robust construction ensures long-lasting durability, while the precise calibration improves fuel efficiency and engine responsiveness. Whether you're tackling off-road trails or street riding, these jets provide the accuracy needed for peak performance without compromising on reliability.
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Upgrade your engine's fuel delivery system with MIKUNI's Large Round Main Jets. These precision-crafted components ensure accurate fuel metering, enhancing power output and throttle response for a smoother, more efficient ride.
Key Features
- High-Precision Machining: Ensures consistent fuel flow for optimal engine performance.
- Durable Stainless Steel Construction: Resists corrosion and maintains accuracy in harsh conditions.
- Compatibility: Designed for MIKUNI carburetor systems to ensure seamless integration.
- Easy Installation: Streamlined design for quick replacement without professional assistance.
- Adjustable Flow Rates: Allows customization for different riding conditions and fuel requirements.
Why Choose This Product
These main jets are engineered to deliver reliable performance across a range of power sports equipment, from motorcycles to ATVs. Their robust construction ensures long-lasting durability, while the precise calibration improves fuel efficiency and engine responsiveness. Whether you're tackling off-road trails or street riding, these jets provide the accuracy needed for peak performance without compromising on reliability.
| SKU | GME5F1B772 |
|---|---|
| MPN | FN100604-82.5 |
| Brand | MIKUNI |
| Category | Jets |
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Frequently Asked Questions
The main jet controls fuel flow through the carburetor at mid to full throttle positions. A larger number (like 82.5) means more fuel flow, while smaller numbers restrict fuel. Choosing the correct size is critical for proper engine performance.
Signs you need a larger jet: engine runs lean (pops on deceleration, lacks power). Signs you need a smaller jet: black smoke, fouled plugs, poor fuel economy. Jetting depends on altitude, temperature, and engine modifications.
Yes. The main jet significantly impacts mid-range and full-throttle performance. Proper jetting improves throttle response, power delivery, and fuel efficiency. Incorrect jetting can cause poor performance and engine damage.
Not necessarily. Different Mikuni carburetors have different jet configurations. Verify your specific carburetor model (VM, TM, HSR, etc.) accepts standard main jets before purchasing. Consult your carburetor manual.
Usually yes. Engine modifications like air filter changes, exhaust upgrades, or boring can affect the air-fuel ratio. Rejet to maintain optimal performance and prevent engine damage from running too lean or rich.
Installation Guide
Difficulty
Easy
Est. Time
15 min
Tools Required
- Screwdriver (Phillips or flat head depending on carb design)
- Small wrench or socket set
- Gasket scraper or plastic tool
Pro Tips
- Take photos during disassembly for reference
- Use a gasket scraper to remove old gasket material completely
- Tighten jet snugly but do not force
- Test run engine and listen for lean/rich conditions
- Keep carburetor bowl gasket in good condition
Common Mistakes to Avoid
- Over-tightening jet (can strip threads)
- Not draining fuel before disassembly
- Losing small gasket or o-ring during removal
- Installing jet upside down or in wrong position
Durability & Warranty
Expected Lifespan
Indefinite if properly maintained; brass construction resists corrosion
Warranty
Typically covered under Mikuni's standard warranty (varies by retailer)
Maintenance
No ongoing maintenance required; inspect for debris or damage during carburetor cleaning
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