ESR570 is a high quality regulator/rectifier that is designed to handle the high power output from the large stator in the GL1200 fuel injected models. We incorporated our latest high power circuit inside a very efficient heat sink. ESR570 is a plug in replacement regulator for your Goldwing that offers a very stable output voltage for the bike's electrical system. Thanks to the heat sink design that is used it also runs cooler than the OEM regulator. Our ESR570 unit is covered by a full one year warranty.