A structure for mounting a rear fork in a vehicle, including a body frame having
left and right pivot supporting holes; left and right arm portions of a rear fork
having supporting holes which are coaxial with the right and the left pivot supporting
holes of the body frame a pivot shaft penetrating the pivot supporting holes of
said body frame and the supporting holes of the left and right arm portions of
the rear fork, said rear fork being rotatively supported on the pivot shaft and
being rotatable with respect to said body frame. A tapered cutout is provided on
the end surface portion of the collar to be pressed into the pivot supporting hole
of the engine, so as to allow the pivot shaft to deflect.