Abstract: A bicycle frame, has a pedal hub connection part and a frame column part. The invention also relates to a bicycle and a method and assembly kit for assembling the bicycle frame and bicycle. The bicycle frame (1) according to the invention has a separate front fork (7) with a head tube (7P) and one or several openable head tube connection parts (5) for openably connecting the front fork (7), and that the openable head tube connection part (5) has an unrotatable connection element (21) for unrotatably connecting the head tube (7P) of the front fork (7) and that the head tube (7P) has a bearing assembly (19) for rotatably connecting the front fork (7) and the head tube (7P) to each other, and that the front fork head tube (7P) is connected to the bearing assembly (19) from the inside.