ESR370 is a modern high quality regulator/rectifier that replaces the old-style OEM regulator/rectifiers on various Kawasaki models. We built it around a highly efficient heat sink and used the newest type of regulation circuits to make this ESR370 the best regulator you can get for your Kawasaki. Our ESR370 regulator/rectifier controls its output voltage very precisely which results in a perfect charge rate for your battery across the RPM range. Like all other regulator/rectifiers that ElectroSport produces, this ESR370 also is supplied with a full one year warranty.