ESR691 is a modern high quality regulator/rectifier that replaces the not-so-reliable OEM regulator on the Honda VFR800Fi between the years 2000 and 2001. This modern regulator/rectifier incorporates our late generation rectifier module and voltage control circuitry which we installed in our highly efficient heat sink. Our ESR691 regulator/rectifier therefore offers superior performance compared the the stock unit: output voltage is stable at all engine RPMs, and thanks to our advanced internal power circuit and heat sink the heat generation is kept to a minimum which dramatically improves reliability. Like all ElectroSport parts this ESR691 also comes with a full one year warranty.