52.4mm Scooter Cylinder Block Kit For 125 Citystar Django125 Speedfight 3 Tweet 125cc 4 Stroke This cylinder block kit is designed for with a 125cc 4-stroke engine, including models such as Citystar, Django125, Speedfight 3, and Tweet.The kit features a 52.4mm bore diameter and includes the cylinder, piston, piston rings, and gaskets required for engine rebuilding or performance.It is engineered to fit standard 125cc 4-stroke scooter engines and supports under normal riding conditions.Installation requires basic mechanical knowledge and standard tools.This part is intended for use in replacing worn components or restoring engine compression and efficiency.