| 摘要 |
A motorcycle seating unit includes a seat and a backrest assembly. The seat has a front side and a top seating surface with an essentially horizontal orientation. The backrest assembly has a support arm and a back bar having an external surface. The support arm rotatably engages the seat at one end and engages the back bar at the other end. The backrest assembly has a first selective operational position characterized by an essentially vertical orientation and a second selective operational position characterized by an essentially horizontal orientation. In the second selective operational position, the external surface of the back bar is essentially even with the height of the front side of the seat to expose an essentially smooth continuous transition between the back bar and the seat.
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