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Start ShoppingMIKUNI 17.5mm Bleed Pilot Jet - Precision Brass Carburetor Tuning Jet for Powersports Engines
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Description
Precision-engineered for carburetor tuning, the MIKUNI FN224103-17.5 Bleed Pilot Jet delivers reliable performance and fine-tuned fuel delivery for powersports engines. Ideal for riders seeking optimal throttle response and combustion efficiency.
Key Features
- 17.5mm Main Bore Size: Precise fuel flow control for accurate air-fuel ratio adjustments.
- Brass Construction: Durable, corrosion-resistant material ensures long-lasting performance in harsh environments.
- Bleed-Type Design: Enhances fuel metering accuracy for smooth engine operation across RPM ranges.
- Lightweight Build: 0.1 oz (3 grams) reduces moving parts friction while maintaining structural integrity.
Why Choose This Product
Upgrade your carburetor's tuning capabilities with this specialized pilot jet designed for precision. The brass material resists clogging and maintains consistent flow, while the bleed-type configuration prevents fuel starvation during high-performance scenarios. Whether you're racing or riding in extreme conditions, this jet ensures reliable fuel delivery for maximum engine efficiency and power output.
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Precision-engineered for carburetor tuning, the MIKUNI FN224103-17.5 Bleed Pilot Jet delivers reliable performance and fine-tuned fuel delivery for powersports engines. Ideal for riders seeking optimal throttle response and combustion efficiency.
Key Features
- 17.5mm Main Bore Size: Precise fuel flow control for accurate air-fuel ratio adjustments.
- Brass Construction: Durable, corrosion-resistant material ensures long-lasting performance in harsh environments.
- Bleed-Type Design: Enhances fuel metering accuracy for smooth engine operation across RPM ranges.
- Lightweight Build: 0.1 oz (3 grams) reduces moving parts friction while maintaining structural integrity.
Why Choose This Product
Upgrade your carburetor's tuning capabilities with this specialized pilot jet designed for precision. The brass material resists clogging and maintains consistent flow, while the bleed-type configuration prevents fuel starvation during high-performance scenarios. Whether you're racing or riding in extreme conditions, this jet ensures reliable fuel delivery for maximum engine efficiency and power output.
| SKU | GM5BC5D6DB |
|---|---|
| MPN | FN224103-17.5 |
| Brand | MIKUNI |
| Category | Jets |
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Featured Review
| Make | Model | Years |
|---|---|---|
| Various Japanese | VM series carbureted bikes (e.g., Yamaha YZ, Suzuki RM, Honda CR) | 1985-2024 |
| Kawasaki | KX250/450 (pre-fuel injection) | 1990-2010 |
| Honda | XR series, CRF250R (early) | 1980-2005 |
Frequently Asked Questions
Designed for Mikuni VM series round-slide carbs (VM24 to VM38). Not for BS or TM series.
Use for leaner low-end tuning, common at higher altitudes or with larger mains. Perform plug chop test.
Yes, bleed-type has a bleed hole for better idle/air mixture control vs. standard solid jets.
No, only carbureted models with compatible Mikuni carbs.
Installation Guide
Difficulty
Easy
Est. Time
10 min
Tools Required
- Small flathead screwdriver
- Jet removal tool (optional)
- Carb cleaner
Pro Tips
- Remove carb, unscrew pilot jet counterclockwise. Test plug chop after install to verify jetting. Mark your stock jet size.
Common Mistakes to Avoid
- Not cleaning carb passages before install
- Incorrect jet size selection without testing
Comparison vs Stock/OEM
Aftermarket precision tuning jet vs. OEM fixed-size jet
Improvements
- Adjustable fueling for altitude/temp changes
- Better throttle response
- Eliminates flat spots
Considerations
- Requires jetting knowledge; improper size can cause lean/rich conditions
Durability & Warranty
Expected Lifespan
Indefinite (metal jet, lasts engine life)
Warranty
Limited lifetime (manufacturer defect only)
Maintenance
Inspect for clogging during carb cleans; clean with carb cleaner
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