Patent ID: 8127887

Claim:
A motorcycle, comprising: an engine; an exhaust pipe into which exhaust gas from the engine flows; and a silencer that discharges the exhaust gas flowing out of the exhaust pipe, the silencer comprising a main body including an outer tube, an upstream lid provided at an upstream end of the outer tube, and a downstream lid provided at a downstream end of the outer tube, a first pipe inserted in the main body through the upstream lid and having an upstream end into which exhaust gas from the exhaust pipe flows and a downstream end provided in the main body, and a second pipe provided apart from the first pipe on a downstream side of the first pipe and approximately coaxially with the first pipe and penetrating through the downstream lid, a downstream portion of the first pipe having an inner diameter that gradually decreases from an upstream side toward the downstream end, the downstream portion being provided in the main body, and the upstream end of the second pipe being provided in the main body and having a larger inner diameter than the inner diameter of the downstream end of the first pipe.