Abstract: The two-wheeled vehicle comprises a frame having a steering head, a first frame member connected to and downwardly inclined from the steering head, and a second frame member which forms a junction with the lower end of the first frame member and extends upwardly from the junction. The frame has a downwardly facing seating surface at the junction. A structural unit is connected to the frame at the seating surface and comprises a rear fork. The seating surface extends only across the width of the frame at said junction. The frame is formed with blind bores in the seating surface. The structural unit is connected to the frame by screws and locating pins extending from below into the blind bores.