ESR108 is a high quality regulator/rectifier that replaces the Yamaha OEM regulator on various YFM ATV models. Our ESR108 is a plug in replacement and its internal circuits are built using the latest designs in regulator technology which makes this new regulator/rectifier extremely reliable. We only use the best components and most modern circuits and install these in our very efficient heat sink to get rid of the heat quickly and efficiently. Like all regulator/rectifiers manufactured by ElectroSport this ESR108 also comes with a full one year warranty.