PROBLEM TO BE SOLVED: To provide housing chambers respectively having a wide housing space in both sides of a seat rail, and to improve the appearance of the housing chamber by dividing a recessed part into two parts with one seat rail, which passes through the center of car width. ;SOLUTION: In a motorcycle, a main frame is extended backward from a head pipe, and a seat rail 16 for mounting a seat 8 is extended backward from the main frame, and at least the seat rail 16 is covered with a cover member 28. In this motorcycle, the seat rail 16 is formed of one rail, which passes through the center of car width, and the cover member 28 is formed with a recessed part 28a so as to form housing chambers 29, 29 in both sides of the rail 16, and articles can be put in the housing chambers 29, 29 and put out by opening the seat 8.;COPYRIGHT: (C)1997,JPO
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