Abstract: There is disclosed a frame-rear suspension assembly for a motorcycle and the like which comprises a frame including right and left tubular members, a rear fork pivotally connected to the right and left tubular members and a cross member made of a light alloy and provided between the right and left tubular members, and a rear-suspension system including a spring-loaded damper with one end pivotally connected to the frame, and link means for connecting the other end of the spring-loaded damper to the rear fork. The cross member is detachably connected between the right and left tubular members and the link means is connected to the cross member.

Abstract: A two-wheeled motor vehicle anti-lift device which utilizes the braking torque produced by the rear brake, via a link structure mechanism installed on the body of the vehicle, as anti-lift force. The anti-lift control mechanism produces anti-lift force only within a predetermined axle stroke range due to the fully extended position of the said link structure, and includes a crank member freely movable in the vehicle body frame, and having one end equipped with a roller which contacts the lower surface of the rear fork, while the other end is linked via a tension rod to a component sensitive to braking force which is freely movable about the wheel axle.

Abstract: An upper fork for a front fork assembly of a motorcycle comprising a pair of left and right fork member units and a bridge for interconnecting said pair of units. In order to improve the strength and rigidity of the upper fork with reduction of the weight taken into consideration, each fork member unit includes two pipes having upper and lower ends welded to each other, and a cross member welded to mid portions of the two pipes to interconnect them. The bridge is welded to the two pipes and the cross member of each of the pair of fork member units. The cross member and the bridge are formed to be hollow.