Patent ID: 7637349

Claim:
An exhaust system of a motorcycle, comprising: front exhaust pipes connected with front cylinders of a V-type engine; rear exhaust pipes connected with rear cylinders of the engine; and an exhaust chamber connected with rear ends of the front and rear exhaust pipes, wherein: the rear ends of the front exhaust pipes are connected with a front part of the exhaust chamber; the rear ends of the rear exhaust pipes are connected with an upper part of the exhaust chamber at a position that is the same as or forward of, in a fore to aft direction of the exhaust chamber, a position at which the front exhaust pipes are connected to the exhaust chamber; exhaust gases discharged from both the front and rear exhaust pipes are unified within a unifying section of the exhaust chamber, and a catalyst is disposed in the exhaust chamber in the rear of and in the vicinity of the unifying section; and the length of the rear exhaust pipes is shorter than the length of the front exhaust pipes.