Patent ID: 8091683

Claim:
A motorcycle comprising: a rear wheel; and a silencer provided on a side of the rear wheel, wherein the silencer includes: an outer tube; and a tubular spark arrester disposed inside the outer tube, with a longitudinal axis of the spark arrester oriented in a longitudinal direction of the outer tube; wherein in a sectional plane that is perpendicular or substantially perpendicular to the longitudinal direction of the outer tube and the spark arrester, the outer tube has an outside dimension in a height direction that is greater than an outside dimension of the outer tube in a lateral direction, and the spark arrester has an outside dimension in the height direction that is greater than an outside dimension of the spark arrester in the lateral direction; and the outer tube includes an opening in a rear portion thereof, the silencer further includes a lid member mounted at the rear portion of the outer tube along an edge of the opening and supporting the spark arrester inside the outer tube, the opening being generally elliptical and having a greater dimension in the height direction than a dimension in the lateral direction.