| 摘要 |
A frameless motorcycle (1) comprises a front suspension (7, 8, 9, 11, 12, 13, 5a, 5b) including an upper front swing arm (7) and a lower front swing arm (8) cooperating with each other to support a front wheel (10) at the front ends thereof, a rear wheel (15), and an attachment member (3) which has a bottom wall portion (6) and left and right side wall portions (5, 5) continued to the left and right ends of the bottom wall portion (6), when viewed from ahead of the vehicle, and to which an engine (4) is attached. The upper and lower front swing arms (7, 8) are pivotably attached at rear end parts thereof to the side wall portions (5, 5) of the attachment member (3), such that the parts of the lower arm (8) attached to the side wall portions (5, 5) are offset inwardly of the vehicle by a predetermined distance (l) with respect to the parts of the upper arm (7) attached to the side wall portions (5, 5).
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