70cc Big Bore Top End Kit for Aprilia RS50 Yamaha DT50 TZR50 AM6 47mm 2 Stroke

For Yamaha TZR50. for Aprilia RS50 1999-2005 (AM6 engine). for Yamaha DT50 (AM6). Bore Size: 47mm. Stroke: 2T. Type: Cylinder Piston Kit. 1 Cylinder Piston Kit. Bicycle Bearing Press Set Bike Assembly Tool Wheels Hub InstallationTool Bracket.