Starting motor is used for motorcycle engines,initiate the engine's operation under its own power. On motorcycles, starting motor is usually electric. When DC power from the starting battery is applied to the solenoid, usually through a key-operated switch (the "ignition switch"), the solenoid engages a lever that pushes out the drive pinion on the starter driveshaft and meshes the pinion with the starter ring gear on the flywheel of the engine.Due to the precision and maintenance difficulty of its internal system, we usually sell the starting motor as a whole rather than subdivide the internal parts. Of course, if you have the demand for internal parts, we can also customize it for you. Due to the different engines of various motorcycle manufacturers, the starting motor is also special for special motorcycle and can not be mixed in different types of motorcycles, So when you ask us about this product, the model of motorcycle must be provided.