Air Fuel Mixture Screw CNC Adjust Carb FCR Air Screw Compatible with KEIHIN Carburetor Four-Strokes FCR Carbs Motorcross Motorcycle(red)

【Fitment】:Fits most Keihin FCR & FCR-MX Carburetors,fits most common 4-stroke models (Reference fit models as following).fcr air fuel screw adjuster comes with spring, washer and O-ring, it is easy to install and replace. 【Easy To Adjust】:Easy grip knob with laser etched numbers for simple and accurate adjustments.Carb mixture screw can easily tune and adjust your idle mixture without burning your hands or fumbling with a small screw driver. 【High Quality Material】: This keihin fuel mixture screw is made of premium 6061-T6 aluminum,CNC machined,anodized finishing treatment to ensure maximum strength and durability for long lasting usage,lightweight and rust-proof. 【High Quality Material】: This keihin fuel mixture screw is made of premium 6061-T6 aluminum,CNC machined,anodized finishing treatment to ensure maximum strength and durability for long lasting usage,lightweight and rust-proof. 【BEST AFTER SALES SERVICE】:We quality promise for 60 days from date of purchase.If you have any questions,please feel free to contact us,we will try our best to solve your problem.Please verify that this part fits your motorcycle before you purchase(Reference fit models as following)