SSP-G 47mm Big Bore Cylinder Kit for 50cc 4-Stroke Yamaha Scooters SPECIFICATIONS: Upgrades to 75.6cc Displacement Bore: 47mm Overall Height (cylinder): 71.5mm Piston Pin Outer Diameter: 10mm Overall Piston Height: 30mm Piston Compression Height: 16mm Includes Extra Head Gasket 3 Valve Head Intake Valve Diameter: 15.5mm Exhaust Valve Diameter: 16.5mm Used on Fuel Injection Setup COMPATIBILITY: C3 Giggle 50 4T Vino 50 4T Zuma 50F 4T SSP-G 47mm Big Bore Cylinder and Head Kit for the Yamaha Zuma 50F 4 Stroke Liquid Cooled Scooter and many other makes and models including the Vino Classic 50cc (4 stroke model). Upgrades to 75.6cc displacement! Includes cylinder, 3-Valve cylinder head, head gaskets, base gasket, piston, piston pin, piston rings and cir clips. **NOTE: A FUEL PRESSURE REGULATOR OR FUEL INJECTION TUNER MUST BE USED WITH THIS CYLINDER KIT** **