MC^MP Intake Inlet Manifold Pipe for GY6 125cc-150cc ATV Go Kart Scooter Moped Go-karts 4 Wheeler Quad Bikes Dune Buggy Intake Manifold Pipe fits for GY6 125cc 150cc ATV,Go Kart, Scooter fits for GY6 125cc 150cc engine Outside diameter: 43mm