MYK Carburetor fits 4-Stroke Horizontal/Vertical engines 19mm (RH) Hand Choke ATV Go Kart Dirt Bike 50cc, 70cc, 90cc, 100cc, 110cc, 125cc 19mm Carburetor with hand choke, fits most 4-Stroke Horizontal Style Engines with 19mm opening. Commonly found on 50cc up to 125cc ATVs, Dirt Bikes, Pocket Bikes Mounting Hole Spacing: 48mm / 19mm Opening Air Intake Outer Diameter: 35mm Please verify your vehicle factory specifications to make sure this is the right carburetor for your application