ESR536 is a high quality regulator/rectifier that has been specifically designed to replace the OEM part on the Triumph 675 models. Therefore it is also a direct plug-in replacement. Our ESR536 incorporates a very efficient heat sink which keeps the temperature of the unit down and internally we use only the best quality components for the power circuits. The result is a very high quality unit that is far superior to the OEM regulator. This regulator/rectifier controls output power accurately and provides for a stable charge rate of the battery across the wide RPM range of this motor. Like all regulator/rectifiers and stators manufactured by ElectroSport our ESR536 also comes with a full one year warranty.