47mm Big Bore Cylinder Kit for 50cc 2-Stroke Air-Cooled TGB ScootersSPECIFICATIONS: Bore: 46.9mmOverall Height (cylinder): 78.5mmCylinder Sleeve Outer Diameter: 50.7mm Piston Pin Outer Diameter: 10mmOverall Piston Height: 45mmPiston Compression Height: 19mmExhaust Bolt Hole Spacing: 48mmCOMPATIBILITY: TGB – 101R 50 2T, 101S 50 2T, 203 50 2T, 303R 50 2T, Acros Tec 50 2T, Delivery 50 2T, F409 50 2T, Laser 50 2T, R50X 50 2T**NOTE: DOES NOT COME WITH THE CYLINDER HEAD**Please see our Warranty and Returns Policy