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Start ShoppingMIKUNI 107.5 Large Round Main Jet - Brass Clip-On Jet for Carburetors
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Description
Upgrade your carburetor's fuel delivery system with MIKUNI's 107.5 Large Round Main Jet. This high-quality brass jet ensures precise fuel metering for enhanced engine performance and reliable operation.
Key Features
- 107.5 Jet Size: Optimized for high-performance engines requiring precise fuel flow control.
- Brass Construction: Durable, corrosion-resistant material for long-lasting use in harsh environments.
- Clip-On Design: Easy installation and quick adjustments for carburetor tuning.
- 0.106 Inch Orifice: Fine-tuned flow rate for balanced fuel-air mixture.
Why Choose This Product
Mikuni's Large Round Main Jet delivers unmatched reliability and precision for motorcycle, ATV, and off-road engine applications. The brass material resists clogging and maintains consistent fuel flow under varying conditions. Its clip-on style simplifies installation, while the exact orifice size ensures optimal engine performance. Whether you're tuning for power or efficiency, this jet provides the accuracy needed for professional results.
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Upgrade your carburetor's fuel delivery system with MIKUNI's 107.5 Large Round Main Jet. This high-quality brass jet ensures precise fuel metering for enhanced engine performance and reliable operation.
Key Features
- 107.5 Jet Size: Optimized for high-performance engines requiring precise fuel flow control.
- Brass Construction: Durable, corrosion-resistant material for long-lasting use in harsh environments.
- Clip-On Design: Easy installation and quick adjustments for carburetor tuning.
- 0.106 Inch Orifice: Fine-tuned flow rate for balanced fuel-air mixture.
Why Choose This Product
Mikuni's Large Round Main Jet delivers unmatched reliability and precision for motorcycle, ATV, and off-road engine applications. The brass material resists clogging and maintains consistent fuel flow under varying conditions. Its clip-on style simplifies installation, while the exact orifice size ensures optimal engine performance. Whether you're tuning for power or efficiency, this jet provides the accuracy needed for professional results.
| SKU | GM20BC53B7 |
|---|---|
| MPN | FN100604-107.5 |
| Brand | MIKUNI |
| Category | Jets |
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Featured Review
| Make | Model | Years |
|---|---|---|
| Various | Mikuni TM/HPMV carbureted motorcycles/ATVs | 1980-2025 |
| Suzuki | RM250/ RMZ250/ RMX250 | 1990-2010 |
| Yamaha | YFS200 Blaster/ YZ125/ YZ250 | 2000-2020 |
| Kawasaki | KX125/ KX250 | 1985-2005 |
Frequently Asked Questions
Fits Mikuni TM series (TM38, TM40), HPMV flat-slide carbs on dirt bikes, ATVs. Not for round-slide carbs.
Depends on model; typically stock main jets range 102.5-112.5. Larger number = richer mixture.
Single jets for precise tuning. Buy multiple sizes (5-10 increments) for testing.
No, Mikuni jets have different threading/head shape. Use Keihin DJ or N1008 jets for those.
Check spark plug color after WOT run: white=lean (go bigger), black=rich (go smaller).
Installation Guide
Difficulty
Easy
Est. Time
5 min
Tools Required
- Small flathead screwdriver
- Jet cleaning wire or carb cleaner
Pro Tips
- Remove carb float bowl completely for access. Test plug chop after install to verify jetting. Clean old jet residue from needle jet
Common Mistakes to Avoid
- Not cleaning jet passages before install
- Installing wrong size jet
Comparison vs Stock/OEM
OEM jets often wear or clog; Mikuni precision-machined brass jets offer consistent flow
Improvements
- More precise orifice sizing
- Corrosion resistant
- Easier to clean
Considerations
- Aftermarket tuning required for optimal performance
Durability & Warranty
Expected Lifespan
Indefinite with proper cleaning (carb rebuild every 20-50 hours)
Warranty
Limited lifetime against manufacturing defects
Maintenance
Clean with wire or carb cleaner during every rebuild; inspect for wear
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