Abstract: A latching system 1 has a housing 3 provided with a recess 5 in which a part of the bicycle can be inserted, preferably a frame tube sloping upwards. In the housing 3 a latching element 7 is located which can be moved between a release position in which the latching element opens the recess and a latching position in which the latching element closes the recess. The latching system 1 further comprises a key 19 that is positioned in an opening 21 in the housing 3 and is pushed out of the housing when the latching element is moved from the latching position to the release position. To this end the latching element 7 is equipped with an arm 23 which is fitted to the U-shaped part of the housing. When the latching element 7 turns to the release position, one end 25 of the arm 23 pushes against the key 19 causing it it be pushed out of the opening 21.