47mm Big Bore Cylinder Kit for 50cc 2-Stroke Air-Cooled TGB Scooters SPECIFICATIONS: Bore: 46.9mm Overall Height (cylinder): 78.5mm Cylinder Sleeve Outer Diameter: 50.7mm Piston Pin Outer Diameter: 10mm Overall Piston Height: 45mm Piston Compression Height: 19mm Exhaust Bolt Hole Spacing: 48mm COMPATIBILITY: 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