This motorcycle starter relay is designed for use with select models.It uses a small current to control the starting relay, which activates the starter motor by supplying power, thereby increasing starting current and protecting the ignition switch.Constructed with oxygen-free pure copper for reduced impurities and improved conductivity.Plastic components are made from PA66 and PBT materials for heat resistance.Features oxygen-free copper enameled wire with winding for stable magnetic flux and performance.Rated for up to 10, 000 operations.Compatible with various motorcycle models including those with engine displacements of 125cc, 250cc, 600cc, 700cc, 800cc, 1000cc, and 1500cc, as well as specific models such as AN400, LTZ250, SV650, DL1000, VZ800, and VL1500.Designed as a direct-fit replacement 31800-21E20-000.