A wheel hub (8) for a two-wheeled vehicle and a traction element transmission that can be coupled to the wheel hub (8) are described. The wheel hub (8) comprises, inter alia, an axle, a housing, a driver, a transmission, which couples the driver and the housing to one another, an output wheel (13) of a traction element transmission, and a releasable
coupling, which couples the output wheel (13) to the driver. The output wheel (13) is attached to the two-wheeled vehicle in such a way that it remains on the two-wheeled vehicle when the
coupling between the driver and the output wheel (13) is released.The traction element transmission for a two-wheeled vehicle, in which the rear wheel is attached rigidly to the frame or is supported in a sprung manner on a swing arm, comprises an input wheel (12), an output wheel (13) and an endless
coupling means (14). In this arrangement, the input wheel (12) and the output wheel (13) interact directly with the endless coupling means (14). The traction element transmission furthermore comprises a first compensation mechanism, which acts on a guide wheel (15.1, 15.2) for the coupling means (14), by means of which compensation mechanism the guide wheel (15.1, 15.2) can be moved over a first radial path, and a second compensation mechanism, which acts on a guide wheel (15.1, 15.2) for the coupling means (14), by means of which compensation mechanism the guide wheel (15.1, 15.2) can be moved over a second radial path. Here, the first path is longer than the second path.The interplay between these two components makes possible a two-wheeled vehicle, the traction element transmission of which is safe and requires little maintenance despite its mobile rear-wheel swing arm, which may be present, and the rear wheel of which can be removed from the two-wheeled vehicle without interfering with the traction element transmission.