ESR170 is a high quality regulator/rectifier which was designed to replace the Suzuki OEM regulator/rectifier on various Suzuki street bikes. This new unit features modern electronics and a highly efficient heat sink which makes this ESR170 a very reliable unit. Internally the voltage regulation circuit controls the output voltage very accurately which results in a perfect charge for your battery. This is the best regulator/rectifier available for these Suzukis. ESR170 comes with a full one year warranty like all other regulator/rectifiers that are manufactured by ElectroSport.