ESK136 is a high power stator kit that replaces both the stator and the regulator/rectifier on the Yamaha YFZ450R ATV. We configured the stator to provide a high output feeding into our ESR603 regulator/rectifier, which provides the power as DC to the battery. You can then connect any lighting you may want to add to the on board 12V system. Available power output: about 120W Both stator and regulator/rectifier are manufactured using the highest grade materials and come with a full one year warranty.