1Pcs Adjustable Fuel Mixture Screw Motorcycle Carb Motor Air Carburetor Silver

Description：

Made from high quality materials Allows for no tools track or trail side tuning and improving of idle performance and off-idle acceleration 4 point reference dial Fitment: Fits for Keihin FCR & FCR-MX Carburetors, fits most common 4-stroke models. Package Included: Silver Comes complete with new fuel screw spring, and O-ring(As Picture Shown)