US Patent 10160506 Straddle type vehicle

To suppress intake noise and secure a quiet ride on a straddle type vehicle wherein a box-shaped structure includes an air cleaner box connected to an engine. In addition, exhaust air from the radiator disposed in the vicinity of the box-shaped structure is prevented from hitting a leg portion of a rider. A main frame is provided as a separate body from a head box so as to support a power unit and a front two-wheeled suspension device. The head box is supported on the main frame due to the fact that an air cleaner box is fixed on the main frame through a fixing member. A guide portion is formed on the air cleaner box so as to guide the exhaust wind from a radiator to the lower direction.