Patent ID: 7699134

Claim:
A motorcycle comprising: an engine, an exhaust pipe unit connected with the engine at a first end, the exhaust pipe unit extending between the engine and a surface over which the motorcycle operates; and a muffler unit connected with the exhaust pipe unit, the muffler unit comprising a first muffler and a second muffler; the first muffler being connected with a second end of the exhaust pipe unit, the first muffler comprising a rearward first expansion chamber and a forward second expansion chamber, a first connecting pipe fluidly connecting the exhaust pipe unit and the first expansion chamber, the first connecting pipe extending through the second expansion chamber, and a second connecting pipe connecting the first expansion chamber and the second expansion chamber, the first connecting pipe extending through the muffler at a lower position than the second connecting pipe, the second muffler including a third expansion chamber connected with the second expansion chamber the first muffler being positioned between the engine and a rear wheel, the first muffler comprising inclined lateral side walls extending at a first angle such that the inclined lateral side walls extend upward and outward when viewed from a front of the vehicle; and the second muffler being connected with the first muffler and being disposed near the side of the rear wheel, and the second muffler extending rearward of the first muffler while being laterally inclined at a second angle approximately equal to the first angle of the inclined lateral side walls of the first muffler.