A set of clutch friction plates for Viper 125-200 cc motorcycles and similar (China, Minsk). The friction plates transmit torque from the engine to the gearbox when the clutch lever is released and disconnect them when the lever is pulled.
Signs of wear: the clutch slips under load, the revs rise but the speed does not, and gears engage with jerks or with difficulty. The plates are replaced as a set; while you are at it, it is worth checking the springs and the steel plates.
