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Start ShoppingMIKUNI FBS30/96-57.5 Bleed Pilot Jet - High-Performance Brass Fuel Jet for Powersports Engines
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Description
Upgrade your powersports engine's fuel system with this precision-crafted MIKUNI Bleed Pilot Jet. Engineered for the FBS30/96 series, this 57.5-sized brass jet ensures accurate fuel metering for responsive power delivery and reliable performance in demanding off-road conditions.
Key Features
- Size: 57.5 - Optimized fuel flow for high-performance engines
- Brass Construction - Corrosion-resistant durability with smooth fuel passage
- 0.1 oz Weight - Lightweight design reduces engine strain without compromising strength
- Standard M5 x 0.75 Threading - Universal compatibility with Mikuni carburetor systems
Why Choose This Product
Whether you're tuning a motorcycle, ATV, or UTV, this bleed pilot jet delivers precise fuel metering for improved throttle response and consistent power output. Its corrosion-resistant brass construction ensures long-lasting performance in harsh environments, while the lightweight design minimizes engine load. The standard threading simplifies installation, making it an essential upgrade for riders seeking optimized fuel system efficiency.
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Upgrade your powersports engine's fuel system with this precision-crafted MIKUNI Bleed Pilot Jet. Engineered for the FBS30/96 series, this 57.5-sized brass jet ensures accurate fuel metering for responsive power delivery and reliable performance in demanding off-road conditions.
Key Features
- Size: 57.5 - Optimized fuel flow for high-performance engines
- Brass Construction - Corrosion-resistant durability with smooth fuel passage
- 0.1 oz Weight - Lightweight design reduces engine strain without compromising strength
- Standard M5 x 0.75 Threading - Universal compatibility with Mikuni carburetor systems
Why Choose This Product
Whether you're tuning a motorcycle, ATV, or UTV, this bleed pilot jet delivers precise fuel metering for improved throttle response and consistent power output. Its corrosion-resistant brass construction ensures long-lasting performance in harsh environments, while the lightweight design minimizes engine load. The standard threading simplifies installation, making it an essential upgrade for riders seeking optimized fuel system efficiency.| SKU | GMD7A979BC |
|---|---|
| MPN | FBS30/96-57.5 |
| Brand | MIKUNI |
| Category | Jets |
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Featured Review
| Make | Model | Years |
|---|---|---|
| Various (Suzuki, Yamaha, Kawasaki, Honda) | Models with Mikuni TM or BS carburetors (e.g., Suzuki RM250, Yamaha YZ250, Kawasaki KX250) | 1980-2025 |
Frequently Asked Questions
Fits Mikuni TM38, TM40, BS34/36/38, VM34 series carburetors on most Japanese 2-stroke/4-stroke dirt bikes.
Use a jetting kit or dyno tune. Common for sea-level to mid-altitude setups on stock or mildly modified engines.
Yes, bleed-type (FBS30/96) has an air bleed hole for better low-speed atomization and easier tuning.
Yes, compatible with many 4-stroke carbs like TM40 on Honda CRF or Yamaha WR models.
Installation Guide
Difficulty
Easy
Est. Time
10 min
Tools Required
- Small flathead screwdriver
- Jetting gauge or calipers (optional)
- Carb cleaner
Pro Tips
- Remove carburetor fully for best access. Test plug chops after install to verify air/fuel ratio. Always change main jet too for complete jetting.
Common Mistakes to Avoid
- Not cleaning carb passages before install
- Incorrect jet size selection without testing
Comparison vs Stock/OEM
Aftermarket Mikuni jet offers precise sizing increments vs OEM (often limited sizes)
Improvements
- Better fuel atomization via bleed design
- Easier tuning for mods like exhaust/airbox
- Superior brass material consistency
Considerations
- Requires jetting knowledge; improper size can cause lean/rich conditions
Durability & Warranty
Expected Lifespan
Indefinite (does not wear out; replace only if damaged)
Warranty
Limited lifetime from Mikuni against manufacturing defects
Maintenance
Inspect during carb cleaning; clean with carb solvent, avoid abrasives
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