Motorcycle Carburetor Air Fuel Mixture Screw For FCR MX CRF YZF WR KXF KLX RMZ Motorcycles Atv Dirt Bike Carb This carburetor air fuel mixture screw is designed for use with FCR, MX, CRF, YZF, WR, KXF, KLX, and RMZ models, providing a solution for adjusting the air-fuel ratio in motorcycle and ATV engines.Made from aluminum , the screw offers and resistance to corrosion.It weighs 3.5 grams net and 13.5 grams gross, contributing to a lightweight setup without compromising strength.Available in red, blue, and black, the screw allows for visual customization and easy identification during tuning.Its design supports direct replacement of the stock mixture screw, simplifying the adjustment process for improved engine response and performance under various riding conditions.Installation requires no special tools and can be completed quickly, making it accessible for routine maintenance or performance tuning.The screw is built to maintain consistent function over time and remains easy to access for cleaning or replacement when needed.