MTX Regulator Rectifier To Fit Yamaha YZF-R125 XJR400 WR125R YBR125 YP180 YP250
WR125R 09-16. There are generally two ways for the regulator rectifier to fail. The first deals with diode burnout, resulting in battery drain. Depending on the location of the regulator rectifier, the part can easily overheat.