In an installation structure of an accelerator position sensor connected to an accelerator grip via an accelerator cable in a straddle-type vehicle, a seat is supported from a lower side of the straddle-type vehicle by a pair of seat rails, an air cleaner case is installed below the pair of seat rails, an outlet tube extends forward from the air cleaner case, an upper surface of the outlet tube is lower than an upper surface of the air cleaner case, and the accelerator position sensor is installed above the outlet tube between the pair of seat rails.

In an installation structure of an intake air temperature sensor for detecting a temperature of intake air to an engine in a straddle-type vehicle, an air cleaner case is installed behind the engine, an outlet tube is connected to a front surface of the air cleaner case, a rear suspension is installed in front of the air cleaner case, the outlet tube has a passage portion extending forward through one side with respect to the rear suspension in a vehicle width direction of the straddle-type vehicle, and the intake air temperature sensor is installed on a side surface on another side of the outlet tube in the vehicle width direction.

In an installation structure of an intake air temperature sensor for detecting a temperature of intake air to an engine in a straddle-type vehicle, an air cleaner case is installed behind the engine, an outlet tube is connected to a front surface of the air cleaner case, a rear suspension is installed in front of the air cleaner case, the outlet tube has a passage portion extending forward through one side with respect to the rear suspension in a vehicle width direction of the straddle-type vehicle, and the intake air temperature sensor is installed on a side surface on another side of the outlet tube in the vehicle width direction.

A portion of a body cover which is not movable relative to a body frame defines a space to guide air to an air cleaner. When a vehicle is in a condition that the body frame is in an upright state and is viewed from the front in a front-rear direction of the body frame, the space is at least partially situated at least one of above a lower end of an upper cross member in an up-down direction of the body frame, on the left of a left edge of a linkage in a left-right direction of the body frame; and on the right of a right edge of the linkage in the left-right direction of the body frame.

A saddle-ridden vehicle includes: a pair of frame members which are disposed on one side and on other side in a vehicle width direction so as to extend in a vehicle front-rear direction; an engine which is disposed between and supported by the pair of frame members; an air cleaner which cleans air for fuel combustion; a supercharger which compresses the air cleaned by the air cleaner; an intercooler which cools, using a cooling wind, the air compressed by the supercharger and supplies resulting air to the engine; and an exhaust wind duct which determines a discharge position or a discharge direction of the cooling wind discharged from the intercooler, and the exhaust wind duct is disposed above the engine on the one side in the vehicle width direction and extends to rear of the engine.

A straddled vehicle including a body frame having a head pipe, a front cover in front of the head pipe, an exterior cover laterally covering the body frame, a fuel tank disposed behind the head pipe, an air cleaner disposed directly below the fuel tank, a duct disposed between the front cover and the head pipe and extending from an opening in the front cover, and a wind guide cover disposed between the head pipe and the fuel tank. The fuel tank and the exterior cover forms a wind guide pathway therebetween, the wind guide pathway being directly below the fuel tank, and being laterally covered with the exterior cover. The wind guide cover is configured to lead traveling wind passing through the duct from the opening to the wind guide pathway, so that the wind guide pathway leads the traveling wind to an air intake port of the air cleaner.

A straddled vehicle including a body frame having a head pipe, a front cover in front of the head pipe, an exterior cover laterally covering the body frame, a fuel tank disposed behind the head pipe, an air cleaner disposed directly below the fuel tank, a duct disposed between the front cover and the head pipe and extending from an opening in the front cover, and a wind guide cover disposed between the head pipe and the fuel tank. The fuel tank and the exterior cover forms a wind guide pathway therebetween, the wind guide pathway being directly below the fuel tank, and being laterally covered with the exterior cover. The wind guide cover is configured to lead traveling wind passing through the duct from the opening to the wind guide pathway, so that the wind guide pathway leads the traveling wind to an air intake port of the air cleaner.

In a cowl stay structure for a vehicle which is mounted on a front end part of a body frame having a pair of main frames extending longitudinally to the left and right, and which supports a cowling, a cowl stay supporting the cowling has a front opening which serves as a duct with a hollow structure designed to guide the air taken in from a front side of a vehicle body to an air cleaner box. The cowl stay is mounted on a front surface of a head pipe arranged on the front end of the body frame for establishing a flow path of the front opening with said head pipe opening. A headlight configured to irradiate an area in front of a vehicle with light is placed inside the cowl stay. Such a cowl stay structure has reduced size and weight, and it supports multiple parts.

A two-wheeled vehicle may include a frame, a plurality of ground-engaging members for supporting the frame and an engine supported by the frame and operably coupled to the ground-engaging members. Additionally, the two-wheeled vehicle may include an airbox including inlet tube and a filter. The airbox may include by a first housing portion, a second housing portion, and a vertical seam coupling the first and second housing portions.

A two-wheeled vehicle may include a frame, a plurality of ground-engaging members for supporting the frame and an engine supported by the frame and operably coupled to the ground-engaging members. Additionally, the two-wheeled vehicle may include an airbox including inlet tube and a filter. The airbox may include by a first housing portion, a second housing portion, and a vertical seam coupling the first and second housing portions.