A motorcycle includes an exhaust device connected to an engine unit, and
the exhaust device includes: a plurality of first exhaust pipes forwardly
extending from an exhaust port which opens in the front of the engine
unit; a joint portion for joining the first exhaust pipes; a second
exhaust pipe connected to a downstream side of the joint portion and
passing below an oil pan disposed in a lower portion of the engine unit;
and an exhaust expansion chamber connected to a downstream portion of the
second exhaust pipe. A cowling of such a motorcycle includes: a front
cowling covering the engine unit and the exhaust device from lower and
side portions thereof; and a rear cowling partially covering a rider's
seat. The front cowling is formed with an air-exhaust opening at a bottom
surface of a rear end thereof positioned to a front lower surface of the
exhaust expansion chamber.