The flexibly controlled overrunning clutch includes an overrunning clutch and a grup of frictinoal functional parts. The parallel and opposite master and slave frictional parts are installed onto the limiting part interlocked to the driving wheel and the driven wheel with axial shift interval in between. Between the relative functional parts to hold down the master and slave frictional parts separately, is separating spring to make the master and slave frictional parts in separation state normally. One of the functional parts can shift axially under the action of one pressing part. The clutch can be installed on the main shaft or the counter shaft of the engine or the driving hub in a motorcycle for transmitting power, overrunning sliding and flexible connection between the front part and the back part of the motorcycle. |