Patent ID: 7730988

Claim:
A rear wheel suspension for a motorcycle, comprising: a swing arm swingably supported by a body frame; a rear cushion for absorbing shock acting on a rear wheel; and a power transmission portion for transmitting a drive force from a power unit to the rear wheel; wherein the swing arm includes: an upper arm swingably connecting the body frame with an upper portion of the power transmission portion; and a lower arm swingably connecting the body frame with a lower portion of the power transmission portion, wherein an axial center of an upper end support portion of the rear cushion is swingably supported by the upper arm at a position forward of an axial center of a first pivot pipe swingably supporting the upper arm with respect to the body frame of the vehicle, and an axial center of a lower end support portion of the rear cushion is swingably supported by the lower arm at a position rearward of an axial center of a second pivot pipe swingably supporting the lower arm with respect to the body frame of the vehicle, and wherein the lower arm includes a left lower arm disposed on the left side of the vehicle and a right lower arm disposed on the right side of the vehicle, and wherein one of the left lower arm and the right lower arm is formed in a downwardly curved shape and the other is formed in an upwardly curved shape.