nullSize Automatic choke includedInner Diameter intake side 24mmOuter Diameter intake side 32mmInner Diameter air filter side 38mmOuter Diameter air filter side 42mmFitment It fits almost all the 4 stroke GY6 110cc 125CC and 150CC ATVs Go Karts and Scooters This Chinese part fits most makes and models of Chinese Scooters and Mopeds with 125cc 150cc 4 stroke GY6 QMJ QMI157 QMJ QMI152 engine This may also fit some of the model form Yamaha Suzuki Kawasaki and Vespa scooters Package includes 1 x Carburetor