A GEAR SHIFTING MECHANISM HAVING A HOUSING, FORWARD AND REVERSE GEAR ACTUATING LEVERS PIVOTABLY MOUNTED WITHIN THE HOUSING, AND A SELECTOR WHICH IS MOUNTED WITHIN THE HOUSING FOR PIVOTABLE MOVEMENT ABOUT TWO MUTUALLY PERPENDICULAR AXES. A LEVER ENGAGING MEANS ON THE SELECTOR HAS ARMS WHICH EXTEND ALONG THE LEVERS AND INWARDLY ON EITHER SIDE OF THE GEAR ACTUATING LEVERS. THE SELECTOR IS BIASED AWAY FROM THE REVERSE GEAR ACTUATING LEVER BY A CAM AND A BIASED CAM FOLLOWER. A SECOND BIASING MEANS URGES THE SELECTOR TO A POSITION SO AS TO ENGAGE THE FORWARD LEVER FARTHEST AWAY FROM THE REVERSE ACTUATING LEVER.