Abstract: The present invention includes a conversion kit having substantially four pairs of pieces including a pair of rotors, a pair of calipers, a pair of bracket plates, and a pair of hub inserts along with the necessary fastening structure. The installation or conversion is as follows: The drum brake is completely removed from the axle and the new rotor is mounted thereon. The rotor is bored out to form a longitudinal cylindrical channel therethrough and the hub insert having an elongated cylindrical portion and a flanged portion is force-fitted with the hollow elongated aperture of the hub until the flange is force-fitted within a circular recess on the outer face of the hub and fastened there so that its face is generally coplanar with the face of the hub.