Abstract: A motorcycle is provided with retractable stop-support side wheels (1) parallel to the back wheel (44). The side wheels (1) lock in place when down at each side of the motorcycle for stop-and-start driving, for parking and for handling the motorcycle when it is not being ridden. Hydraulic cylinders (14) are employed to activate struts (2) on which the side wheels (1) are positioned pivotally at either the outside edge of crash bars (5) of motorcycles having suitable crash bars or between top mounting positions (59) for crash bars and bottom crash-bar and foot-rest mounting means (58) for motorcycles not equipped with suitable crash bars. An attachment angle bracket (3) is shaped for various types of motorcycles for pivotal attachment of the struts (2). Manual or automatic operations with selective-speed up-and-down actuation are optional.