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Start ShoppingMIKUNI FVM22/210-42.5 Bleed Pilot Jet - High-Performance Brass Jet for Racing & Off-Road
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Description
Upgrade your Mikuni carburetor's fuel delivery precision with this high-performance Bleed Pilot Jet. Engineered for racing and off-road applications, this 42.5mm brass jet ensures optimal air-fuel ratios for power and reliability.
Key Features
- Brass Construction: Corrosion-resistant material for long-lasting performance in harsh environments.
- 42.5mm Jet Size: Precisely calibrated for fine-tuning fuel flow in high-output engines.
- Standard Threading: M5 x 0.75 compatibility ensures easy installation with existing Mikuni systems.
- Lightweight Design: Just 1 gram reduces moving parts friction while maintaining structural integrity.
Why Choose This Product
Whether you're competing in motocross, trail riding, or modifying street bikes, this Bleed Pilot Jet delivers consistent fuel metering. The brass alloy resists clogging and maintains flow accuracy under extreme temperatures. Its compact size and standard threading make it a versatile upgrade for tuners seeking precise control over engine performance. Perfect for both professional racers and DIY mechanics looking to optimize their powerplant's efficiency.
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Upgrade your Mikuni carburetor's fuel delivery precision with this high-performance Bleed Pilot Jet. Engineered for racing and off-road applications, this 42.5mm brass jet ensures optimal air-fuel ratios for power and reliability.
Key Features
- Brass Construction: Corrosion-resistant material for long-lasting performance in harsh environments.
- 42.5mm Jet Size: Precisely calibrated for fine-tuning fuel flow in high-output engines.
- Standard Threading: M5 x 0.75 compatibility ensures easy installation with existing Mikuni systems.
- Lightweight Design: Just 1 gram reduces moving parts friction while maintaining structural integrity.
Why Choose This Product
Whether you're competing in motocross, trail riding, or modifying street bikes, this Bleed Pilot Jet delivers consistent fuel metering. The brass alloy resists clogging and maintains flow accuracy under extreme temperatures. Its compact size and standard threading make it a versatile upgrade for tuners seeking precise control over engine performance. Perfect for both professional racers and DIY mechanics looking to optimize their powerplant's efficiency.| SKU | GM4F2C9F78 |
|---|---|
| MPN | FVM22/210-42.5 |
| Brand | MIKUNI |
| Category | Jets |
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Featured Review
| Make | Model | Years |
|---|---|---|
| Various Japanese | Models with Mikuni VM series carbs (e.g., Yamaha YZ, Honda CR, Kawasaki KX) | 1985-2024 |
Frequently Asked Questions
Fits Mikuni VM22/210 series carbs, common on dirt bikes like Yamaha YZ/WR, Honda CR, Suzuki RM.
Tune based on plug chop: if plug is white/lean at idle, go richer (larger jet like 42.5).
Yes, bleed type has air bleed holes for better idle/emulsion control in VM carbs.
No, this is pilot jet only for idle/low speed circuit.
Installation Guide
Difficulty
Easy
Est. Time
10 min
Tools Required
- Small flathead screwdriver
- Needle nose pliers
Pro Tips
- Remove carb, unscrew old pilot jet counterclockwise, install new one hand-tight then 1/4 turn with screwdriver. Clean all passages with carb cleaner
Common Mistakes to Avoid
- Not cleaning carb passages before install
- Installing wrong size jet
Comparison vs Stock/OEM
Direct replacement for OEM Mikuni jets in many Japanese dirt bikes
Improvements
- Precise fuel metering for tuning
- Brass construction resists corrosion better than some OEM alloys
Considerations
- Genuine Mikuni, no performance difference from stock but enables custom tuning
Durability & Warranty
Expected Lifespan
Indefinite with proper maintenance (lasts engine life)
Warranty
Limited manufacturer warranty through retailer
Maintenance
Inspect/clean during carb service (every 20-50 hours)
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