NICHE Cylinder Piston Cylinder Head Gasket Top End Kit for Yamaha PW80 1983-2006 This Cylinder Kit is Designed to Fit 1983-2006 Yamaha PW80 Motorcycles Includes Cylinder, Cylinder Head, Piston Kit, Gasket Kit and NGK Spark-Plug The Standard Cylinder has a 47.00mm Bore and 45.60mm Stroke The Cylinder Displacement is 79cc and has as 6.6:1 Compression Ratio Solid Cast Iron Cylinder with a Black Power Coat for That Vintage Yamaha Look