Honda Keihin FCR Air Fuel Mixture Screw Replacement For CRF150R CRF250R CRF250X CRF450X CRF450R TRX450R Yamaha WR250F WR426F WR450F YFZ450 YZ250F YZ426F YZ450F Kawasaki KLX450R KX250F KX450F Suzuki RMZ250 RAMZ450 6061 T6 Aluminum

Premium 6061-T6 Aluminum FCR carb screw, single pack
✔️ 6061-T6 aluminum, direct replacement for Keihin FCR carbs

This replacement screw is a precision accessory for Keihin FCR carburetors, used on popular models like Honda CRF, Yamaha WR/YZ, Kawasaki KLX, and Suzuki RM-Z families. It lets you fine-tune air-fuel mixture for better idle, throttle response, and fuel economy.

✅ 6061-T6 aluminum body for strength and corrosion resistance
✅ Direct replacement compatible with Keihin FCR carburetors on CRF/WR/YZ/KLX/RMZ models
✅ Red anodized finish for quick visibility during tuning
✅ Precise air-fuel mixture adjuster for Keihin FCR setups
✅ Compact, lightweight design fits in tight carburetor spaces

💡 What is a fuel mixture screw used for in Keihin FCR carbs? A handy device to dial in the air-fuel balance for idle stability and throttle response.

• Helps fine-tune idle and throttle response by adjusting air-fuel mix
• Useful on CRF, WR, YZ, KLX, and RMZ FCR carb setups
• Easy to install as a direct screw replacement with standard thread
• Improves fuel efficiency and engine response when tuned correctly