Part Number: ESR180 Direct Plug in Replacement Better than OEM replacement Regulator/Rectifier Uses our latest regulation circuitry for optimum system voltage Manufactured with modern high grade components for optimal performance Comes with a Full One Year Warranty ESR180 is a high quality regulator/rectifier that replaces the OEM regulator on several Honda two-cylinder models. ESR180 has been designed with a highly efficient heat sink and modern regulation circuits making for a very reliable unit. Output voltage is controlled tightly and this results in a perfect charge rate for your battery across the RPM range. Like all other regulator/rectifiers we manufacture, this ElectroSport ESR180 also comes with a full one year warranty.Fits: 1981-82 Honda CM200T Twinstar1978-80 Honda CB400A / CM400A1978-81 Honda CB400T Hawk / CB400N1979-81 Honda CM400T / CM400E / CM400C1982-86 Honda CB450SC Nighthawk1982 Honda CB450T Hawk1982-83 Honda CM450A Hondamatic1982-83 Honda CM450C Custom / CM450E1989-90 Honda GB500 Tourist Trophy1982-83 Honda FT500 Ascot Items Included Fitments