A bicycle derailleur comprises a base member, a movable member movably coupled to the base member, and a chain guide coupled to the movable member for rotation around a rotational axis. A resistance-applying element applies resistance to rotational movement of the chain guide, and a resistance control element moves between at least different first and second positions. The resistance control element is operatively coupled to the resistance-applying element so that the resistance-applying element applies different first and second resistances to rotational movement of the chain guide when the resistance control element is disposed in the respective first and second positions. A jolt element is disposed within the movable member and is operatively associated with the resistance control element to provide a tactile jolt to a user as the user moves the resistance control element from the first position to the second position.