Patent ID: 6860353

Claim:
An off-road motorcycle comprising a frame, a front suspension assembly rotatably supported by the frame and rotatably supporting a front wheel, a rear swingarm assembly pivotably supported by the frame and rotatably supporting a rear wheel, an internal combustion engine supported by the frame and being configured to drive the rear wheel, the swingarm assembly comprising at least one elongated, tubular arm extending along a side of the rear wheel in a direction substantially aligned with a vertical, central plane of the motorcycle, the swingarm assembly having a rearward end portion member mounted to the tubular arm and arranged to receive an axle, the axle being configured to support a hub assembly of the rear wheel, the end portion having an inner surface facing the hub assembly, the inner surface having a first portion and a second portion, the second portion defining a contact surface arranged to directly contact a portion of the hub assembly and being spaced from the first portion toward the hub assembly to define a thickened area of the end portion, which is thicker than a thinner area defined by the first portion.