Abstract: Wheel hub, in particular bicycle rear wheel hub, comprising hub shell and freewheel shell both supported by bearings to be rotatable relative to the hub axle, where the hub shell is slidingly coupled through spline coupling with a freewheel coupling ring provided with axial pawl teeth on its axial face, wherein an annular permanent magnet (6) is seated in the freewheel coupling ring (3), and another permanent magnet (5) is arranged coaxial to the permanent magnet (6) in the hub shell (1), while the axial pawl teeth (B) of the freewheel coupling ring (3) intermesh with the axial pawl teeth (C) of the freewheel shell (4), and also the inner ring of the bearing (7a) disposed in the hub shell (1) abuts against a hub axle (2) collar (16) and the outer ring of the bearing (7a) is urged towards the said hub axle (2) collar (16) by an adjusting screw (10) screwed in the hub shell (1) from the non-drive side, while the inner ring of the bearing (7b) abuts against the hub axle collar (17) and its outer ring abuts on th