Abstract: A hub shell confines an axial bore therethrough and has first and second annular mounting flanges formed integrally on an external surface thereof adjacent to first and second axial end portions of the axial bore. The hub shell is constituted by two pieces and a tubular connector that interconnects the two pieces. Each piece has an annular end portion which is formed opposite to a respective one of the first and second axial end portions and which has an annular flange that extends inwardly and radially from the periphery of the annular end portion and that abuts against the annular flange of the other piece when the first and second pieces are disposed side by side such that the axial bores are in alignment. The tubular connector is disposed entirely within the two pieces and has two outwardly and radially extending flange portions which clamp the annular flanges of the pieces so as to interconnect the latter.