| 摘要 |
<p>In a vehicle body frame (2) of a motorcycle, right and left down frame portions (22a, 22b) are respectively connected to the right and left lateral portions of a head pipe portion (21) while being downwardly extended on the right and left of the head pipe portion (21) . Right and left reinforcement frame portions (23a, 23b), having stiffness greater than that of the right and left down frame portions (22a, 22b), are respectively connected to the right and left down frame portions (22a, 22b) and are bent rearwards. Right and left under frame portions (24a, 24b) are respectively connected to the right and left reinforcement frame portions (23a, 23b) and are extended rearwards. Further, the vehicle body frame does not include a frame, which is extended from the head pipe portion (21) to a position lower than a flat footboard (53a) while being disposed between the right and left down frame portions (22a, 22b) in a vehicle transverse direction.</p> |
