Patent ID: 8006488

Claim:
An exhaust system for a motorcycle provided with a multicylinder engine, comprising: an exhaust aggregating member for unifying a pair of exhaust passages so as to form a single exhaust passage in the exhaust aggregating member, an exhaust gas exhausted from the engine capable of being transported through the exhaust aggregating member to a muffler, the single exhaust passage being connected to the muffler without being merged with another exhaust passage; an exhaust control valve incorporated into the exhaust aggregating member and capable of changing a sectional area of the single exhaust passage formed in the exhaust aggregating member; and a common partition wall disposed at an upstream side with respect to the exhaust aggregating member so as to separate the pair of exhaust passages from each other, a connecting hole being formed through the common partition wall at a position apart from a downstream end of the common partition wall so that the pair of exhaust passages communicate with each other through the connecting hole.