Motorcycle incorporating a supercharger

A motorcycle incorporating a supercharger, the motorcycle comprising:

• the supercharger which compresses intake air;
• an air-intake chamber which is placed downstream of the supercharger, stores the intake air compressed in the supercharger, and guides the intake air from the air-intake chamber to a combustion chamber of an engine;
• and
• a fuel tank placed above the engine,
• wherein the air-intake chamber is placed between the fuel tank and the engine, and
• wherein the fuel tank includes a recess-forming section provided with a recess at a bottom surface of the fuel tank in such a manner that the bottom surface of the fuel tank does not interfere with the air-intake chamber, and a rearward extension section which extends rearward and downward from the recess-forming section, and
• wherein the rearward extension section is placed below a seat of the motorcycle.