The present disclosure describes an axle and hub structure for attaching a wheel to a bicycle or motorcycle, where the bearings for rotationally supporting the axle and hub are positioned on the frame, and the axle rotates relative to the frame. In one embodiment, a structure for attaching a wheel to one of a motorcycle or bicycle includes an axle having opposing end portions and supporting a wheel, at least one left axle support collar, at least one right axle support collar, a bearing in the left axle support collar and supporting one end portion of the axle, and a bearing in the right axle support collar and supporting an opposing end portion of the axle. The axle rotates relative to the frame.