| 摘要 |
A bicycle seat includes a substantially horizontally extending seat portion and a monolithic metallic rail is connected to an underside of the seat portion so as to be connected with the guide on the top end of the seat post. The monolithic rail includes a connection portion, a rear portion and a front portion. The rear portion includes two extension rods which are connected to the rear end of the seat portion. The front portion is connected to the front end of the seat portion. The connection portion is longitudinally and adjustably attachable to the guide on the seat post of a bicycle. The rail can be used in place of the international parallel rail system and thus convert said bicycle seat from the international parallel rail system to the I-beam system.
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