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Start ShoppingMIKUNI FJ8-8CFY02-95 Jet Needle - High-Performance Intake System for Powersports
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Description
Upgrade your powersports engine's fuel delivery system with MIKUNI's precision-crafted Jet Needle. This critical component ensures accurate fuel metering for enhanced performance, responsiveness, and efficiency across a range of off-road and on-road applications.
Key Features
- Hardened Stainless Steel Construction: Resists corrosion and wear for long-lasting reliability in harsh riding conditions.
- Precision-Ground Taper Design: Ensures flawless fuel flow consistency and minimizes air leaks for optimal engine performance.
- Lightweight Engineering: Only 0.1 oz (3 grams) reduces moving mass for quicker throttle response and improved engine efficiency.
Why Choose This Product
MIKUNI's Jet Needle is engineered for riders who demand precision and durability. Its 60mm length and 2mm diameter provide perfect fitment for compatible carburetors, while the hardened stainless steel ensures resistance to fuel degradation and environmental stress. Whether you're modifying a dirt bike, ATV, or motorcycle, this Jet Needle delivers consistent fuel metering for smoother power delivery and better fuel economy. The precision-ground taper guarantees a perfect seal, reducing the risk of vapor lock and ensuring reliable performance in extreme temperatures.
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Upgrade your powersports engine's fuel delivery system with MIKUNI's precision-crafted Jet Needle. This critical component ensures accurate fuel metering for enhanced performance, responsiveness, and efficiency across a range of off-road and on-road applications.
Key Features
- Hardened Stainless Steel Construction: Resists corrosion and wear for long-lasting reliability in harsh riding conditions.
- Precision-Ground Taper Design: Ensures flawless fuel flow consistency and minimizes air leaks for optimal engine performance.
- Lightweight Engineering: Only 0.1 oz (3 grams) reduces moving mass for quicker throttle response and improved engine efficiency.
Why Choose This Product
MIKUNI's Jet Needle is engineered for riders who demand precision and durability. Its 60mm length and 2mm diameter provide perfect fitment for compatible carburetors, while the hardened stainless steel ensures resistance to fuel degradation and environmental stress. Whether you're modifying a dirt bike, ATV, or motorcycle, this Jet Needle delivers consistent fuel metering for smoother power delivery and better fuel economy. The precision-ground taper guarantees a perfect seal, reducing the risk of vapor lock and ensuring reliable performance in extreme temperatures.
| SKU | GM5E7AC3E7 |
|---|---|
| MPN | FJ8-8CFY02-95 |
| Brand | MIKUNI |
| Category | Intake/Carb/Fuel System |
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Featured Review
| Make | Model | Years |
|---|---|---|
| Yamaha | YZ450F | 2009-2014 |
| Yamaha | WR450F | 2009-2014 |
| KTM | 450 SX-F | 2010-2015 |
Frequently Asked Questions
Typically 3rd clip from top for sea level. Adjust based on elevation and mods (1st clip richer, 5th leaner).
Yes, includes E-clip for needle adjustment positions.
Designed for Mikuni TM40 flat-slide carbs, common on late-model Yamaha 4-strokes.
No, this is Mikuni-specific. Check your carb model first.
Installation Guide
Difficulty
Easy
Est. Time
15 min
Tools Required
- Small flathead screwdriver
- Needle nose pliers
- Carb cleaner
Pro Tips
- Mark needle position with clip before removal. Use clip tool for easier adjustment. Test in stages with 1 clip position change.
Common Mistakes to Avoid
- Bending the needle clip during removal
- Not cleaning carb slides before reinstall
Comparison vs Stock/OEM
Keihin stock needles have softer taper; Mikuni FJ8 provides more precise fueling control
Improvements
- Smoother power delivery
- Better mid-range response
- Easier tuning for mods/elevation
Considerations
- Requires full rejetting kit, not drop-in replacement
Durability & Warranty
Expected Lifespan
Indefinite with proper care (no wear parts)
Warranty
Limited lifetime manufacturer defect warranty
Maintenance
Inspect for straightness during carb cleaning. Store dry to prevent corrosion.
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