EV1004-3010 EV Industries, motor sprocket nut

This Evolution Industries motor sprocket nut is a specialized fastener required for the installation of their Power Drive solid motor sprockets. It is compatible with sprocket part numbers 552043, 552044, 552045, 552048, 552047, and 552046. This nut fits late 1984 through 2006 Big Twin models, excluding 2006 Dyna models, when equipped with the Evolution Industries solid sprocket system. When upgrading to a solid sprocket to eliminate the compensator, using the correct high-strength nut is essential for securing the primary drive. This nut provides the necessary torque retention to keep your drivetrain solid and reliable under the increased stress of a high-performance setup.