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Start ShoppingMIKUNI FVM20/214 Air Adjusting Screw - Brass Intake System Component for Powersports
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Description
Upgrade your powersports engine's performance with the MIKUNI FVM20/214 Air Adjusting Screw. This high-precision brass component delivers reliable air-fuel calibration for enhanced throttle response and fuel efficiency.
Key Features
- Brass Construction: Corrosion-resistant material ensures long-lasting durability in harsh riding conditions.
- M4.0 x 0.7 Thread: Precision-engineered thread size for seamless compatibility with MIKUNI carburetor systems.
- 20mm Length: Optimal length for precise air adjustment without compromising system integrity.
- Lightweight Design: Only 0.5 oz (14g) for minimal impact on engine performance.
Why Choose This Product
Motorcycle and ATV enthusiasts rely on MIKUNI components for their reliability and precision. This air adjusting screw offers superior adjustability for fine-tuning engine performance, ensuring peak power delivery across various riding conditions. Its corrosion-resistant brass construction withstands extreme temperatures and moisture, making it ideal for off-road and high-performance applications. Whether you're modifying a carburetor or maintaining factory specifications, this screw provides the accuracy needed for professional results.
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Upgrade your powersports engine's performance with the MIKUNI FVM20/214 Air Adjusting Screw. This high-precision brass component delivers reliable air-fuel calibration for enhanced throttle response and fuel efficiency.
Key Features
- Brass Construction: Corrosion-resistant material ensures long-lasting durability in harsh riding conditions.
- M4.0 x 0.7 Thread: Precision-engineered thread size for seamless compatibility with MIKUNI carburetor systems.
- 20mm Length: Optimal length for precise air adjustment without compromising system integrity.
- Lightweight Design: Only 0.5 oz (14g) for minimal impact on engine performance.
Why Choose This Product
Motorcycle and ATV enthusiasts rely on MIKUNI components for their reliability and precision. This air adjusting screw offers superior adjustability for fine-tuning engine performance, ensuring peak power delivery across various riding conditions. Its corrosion-resistant brass construction withstands extreme temperatures and moisture, making it ideal for off-road and high-performance applications. Whether you're modifying a carburetor or maintaining factory specifications, this screw provides the accuracy needed for professional results.
| SKU | GM6A5C47A8 |
|---|---|
| MPN | FVM20/214 |
| Brand | MIKUNI |
| Category | Intake/Carb/Fuel System |
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Featured Review
| Make | Model | Years |
|---|---|---|
| Various (Mikuni FVM20 carburetor equipped) | Honda XR250R, XR400R, CRF250R, CRF450R; Yamaha XT250, TTR230; Kawasaki KLX250, KX250; Suzuki DR-Z400 | 1980-2024 |
Frequently Asked Questions
Specifically for Mikuni FVM20 series carburetors (FVM20/214 model designation). Check your carb body markings.
Seat the screw lightly clockwise, then back out 1.5-2.5 turns as a baseline. Fine-tune based on plug reads or performance.
Yes, it's the air adjusting screw (pilot air screw) that controls idle mixture on the FVM20 carb.
Yes, if equipped with a Mikuni FVM20 carburetor (common on many models; verify markings).
Installation Guide
Difficulty
Easy
Est. Time
10 min
Tools Required
- Small flathead screwdriver
- T-handle Allen wrench (1.5mm or 2mm)
- Carb cleaner
Pro Tips
- Apply a tiny bit of thread locker if desired, but not necessary. Turn clockwise to lean mixture, counterclockwise to richen. Start at 2 turns out from seated.
Common Mistakes to Avoid
- Stripping the brass threads by over-tightening
- Not cleaning the seat before installation
Comparison vs Stock/OEM
Direct OEM replacement part from Mikuni (often the factory carb supplier)
Improvements
- Precision machined brass for accurate tuning
- Resistant to corrosion and stripping
Considerations
- Identical to stock; no performance upgrade but restores proper function
Durability & Warranty
Expected Lifespan
Indefinite with proper care (lasts life of carburetor)
Warranty
Limited lifetime from Mikuni against defects
Maintenance
Inspect during carb cleaning; avoid cross-threading
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