Abstract: A drive arrangement for a bicycle including a chainring having a chainring axis, a plurality of different rear sprockets, the plurality of rear sprockets sharing a sprocket axis, a drive chain that runs around the rear sprockets and the chainring and in meshing engagement with a selected active sprocket of the plurality of rear sprockets and the chainring, and a rear derailleur. The rear derailleur is configured to shift the chain over a plurality of sprockets having a difference in tooth count of over 25 teeth ranging from a smallest to a largest sprocket.

Abstract: A derailleur device, particularly a rear derailleur, includes at least one locking device for locking a chain guide at least in one locking position that is different from the starting position in relation to a movable element, and it is provided therein that the locking device includes a locking element displaceable between a passive position, in which the chain guide is released in relation to the movable element, and at least one active position, in which the chain guide is held in the at least one locking position.

Abstract: A drive arrangement for a bicycle including a chainring having a chainring axis, a plurality of different rear sprockets, the plurality of rear sprockets sharing a sprocket axis, a drive chain that runs around the rear sprockets and the chainring and in meshing engagement with a selected active sprocket of the plurality of rear sprockets and the chainring, and a rear derailleur. The rear derailleur is configured to shift the chain over a plurality of sprockets having a difference in tooth count of over 25 teeth ranging from a smallest to a largest sprocket.

Abstract: A stable and play-free pivot connection of a bicycle derailleur between a parallelogram link and either a base member or a chain cage. The pivot points are formed with first and second bushings that are arranged as far from one another as possible. The parts are connected by pivot pins having a anti-rotation contour for preventing rotation of the pin within an inner pivot part. The axial displacement of the pivot pin is prevented by a securing element or by a deforming element engaging a holding contour on the pivot pin. One of the first and second bushings is protected and arranged in a blind hole and the other of the first and second bushings is covered on the outside by a pin head of the pivot pin.

Abstract: An axial fixing and closure member arrangement including an insert element for producing a rotatable, but axially fixed connection between the rotary axle of the chain guide of a rear gear change mechanism for bicycles and the related lower pivot head by means of a spring element, wherein additionally the insert element also has a sealing effect by providing an integrated closure member.