125cc 150cc Carburetor Scooter Moped Atv Go Kart Gy6 4-stroke 24mm Carb @64178 Carburetor will fit almost all the 4 stroke GY6 125CC and 150CC ATVs, Go Karts and SCOOTERS Inner Diameter (intake side): 24mm Outer Diameter (intake side): 32mm Inner Diameter (air filter side): 38mm Outer Diameter (air filter side): 43mm