ESR650 is a modern high quality regulator/rectifier that replaces the dated OEM regulator on the Honda VF Magna and Sabre models. It incorporates our newest power circuit combined with our highly efficient heat sink. Our ESR650 offers superior voltage stability ensuring the battery receives the perfect charge rate at any engine RPM. The advanced heat sink has the added benefit of lowering the operating temperature dramatically improving reliability. Our ESR650 is supplied with a full one year warranty.