OEM Cylinder:70 Good oil-retaining Bore size:47mm Single Cylinder Air Cooling Choiced boron ally cast iron Type:70cc seriesMaterial: Chilled ironCylinder bore:47mmStroke:4Q'TY:8PCS/CTNG.W/N.W.: 2.3KG(without piston kits)Outer packing:cartonApplicable supporting: for Honda, JIALING, LIFAN, ZONGSHEN MOTORCYCLE, LONCIN, KINLON, HAOJUE,DAYANG,QINGQI,JIANSHE,SUZUKI and YAMAHA motorcycle, scooter