X-PRO 18mm Carburetor w/Electric Choke for GY6 50cc Mopeds Scooters Roketa Taotao Jonway 18mm Carburetor. Top Quality Guaranteed. It fits for most Chinese GY6 50cc Mopeds, Scooters, please check pictures and specifications for compatibility Intake Inside Diameter: 18mm; Intake Outside Diameter: 38mm Air Filter Mount Inside Diameter: 35mm; Air Filter Mount Outside Diameter: 39mm ; Increase the horsepower and airflow for your bike, and have more fun with the power at your finger tips. Best Quality Guaranteed Please identify X-PRO NO. 1 China Motorcycle Parts Brand, Better Then OEM Parts.