Steering column module

The tubular handlebars (2) have electrical switches (6,8) with twist grips (30,38) with pushbuttons (40). The handlebar tubes (32) are connected to push-in mountings (34,36) with guide rails (24-26). Through mounting are connected to a central hub arrangement (4) with electronic circuits (10). The assembly has a cassette structure (12) surrounding the steering column (14).