A fuel tank fastening assembly for a motorcycle includes a fuel tank, a holding bracket secured to the fuel tank, and a battery carrier. The holding bracket is fastened to a mount on the battery carrier. A motorcycle assembly includes the fuel tank fastening assembly and a motorcycle frame. The battery carrier of the fuel tank fastening assembly is fastened to the motorcycle frame, and a battery is accommodated and secured in the battery carrier.

A two-wheeled vehicle includes a frame assembly having a front end and a rear end extending along a longitudinally-extending centerline, a front ground-engaging member operably coupled to the front end of the frame assembly at a front rotational axis, and a rear ground-engaging member operably coupled to the rear end of the frame assembly at a rear rotational axis. A wheel base is defined between the front and rear rotational axes and a vertically-extending centerline of the vehicle extends vertically at the midpoint of the wheel base and is perpendicular to the longitudinally-extending centerline. The vehicle also includes a fuel tank, an airbox assembly, and a battery all positioned relative to the vertically-extending centerline of the vehicle.

A two-wheeled vehicle includes a frame assembly having a front end and a rear end extending along a longitudinally-extending centerline, a front ground-engaging member operably coupled to the front end of the frame assembly at a front rotational axis, and a rear ground-engaging member operably coupled to the rear end of the frame assembly at a rear rotational axis. A wheel base is defined between the front and rear rotational axes and a vertically-extending centerline of the vehicle extends vertically at the midpoint of the wheel base and is perpendicular to the longitudinally-extending centerline. The vehicle also includes a fuel tank, an airbox assembly, and a battery all positioned relative to the vertically-extending centerline of the vehicle.

A fuel tank includes metal-made upper and lower tank half bodies respectively having, on respective outer peripheries thereof, an upper joint flange and a lower joint flange joined thereto. The lower tank half body includes: a lower tank main body portion that is elongated in a direction parallel to a reference plane including joint surfaces of lower and upper planar flange portions as parts of the lower and upper joint flanges, respectively, includes, along a longitudinal direction thereof, a narrow portion narrower on one side than the other side, and bulges toward a lower side from the reference plane; and a pair of expansion tank portions that are disposed on opposite sides of the narrow portion as seen in a plan view from a direction orthogonal to the reference plane, formed to be shallower than the lower tank main body portion, and bulge downward from the reference plane.

A fuel tank includes metal-made upper and lower tank half bodies respectively having, on respective outer peripheries thereof, an upper joint flange and a lower joint flange joined thereto. The lower tank half body includes: a lower tank main body portion that is elongated in a direction parallel to a reference plane including joint surfaces of lower and upper planar flange portions as parts of the lower and upper joint flanges, respectively, includes, along a longitudinal direction thereof, a narrow portion narrower on one side than the other side, and bulges toward a lower side from the reference plane; and a pair of expansion tank portions that are disposed on opposite sides of the narrow portion as seen in a plan view from a direction orthogonal to the reference plane, formed to be shallower than the lower tank main body portion, and bulge downward from the reference plane.

A saddle-riding-type vehicle canister arrangement structure is a canister arrangement structure of a saddle riding type vehicle, including: an engine that includes a crankcase; an exhaust pipe that extends downward at a frontward position of the crankcase from a front part of the engine and then passes below the engine; and a canister that recovers an evaporated fuel which is generated at a fuel tank, wherein the canister is arranged between the engine and the exhaust pipe at a frontward position of the crankcase.

A saddle-riding-type vehicle canister arrangement structure is a canister arrangement structure of a saddle riding type vehicle, including: an engine that includes a crankcase; an exhaust pipe that extends downward at a frontward position of the crankcase from a front part of the engine and then passes below the engine; and a canister that recovers an evaporated fuel which is generated at a fuel tank, wherein the canister is arranged between the engine and the exhaust pipe at a frontward position of the crankcase.

A wing member includes a first wing, a second wing, and a connection section connecting one-end sides of the first wing and the second wing. Both the wings are disposed with a spacing therebetween in the longitudinal vehicle direction, and the first wing is located on a vehicle body front upper side relative to the second wing. The connection section connects the one-end sides of both the wings that extend from a cowling toward a transverse-directionally outer side. A front edge of the first wing is inclined such that its transverse-directionally outer side portion is located on the vehicle body rear side relative to its transverse-directionally inner side portion, in plan view of the vehicle body. A rear edge of the first wing is inclined such that its transverse-directionally outer side portion is located on the vehicle body front side relative to its transverse-directionally inner side portion, in plan view.

A wing member includes a first wing, a second wing, and a connection section connecting one-end sides of the first wing and the second wing. Both the wings are disposed with a spacing therebetween in the longitudinal vehicle direction, and the first wing is located on a vehicle body front upper side relative to the second wing. The connection section connects the one-end sides of both the wings that extend from a cowling toward a transverse-directionally outer side. A front edge of the first wing is inclined such that its transverse-directionally outer side portion is located on the vehicle body rear side relative to its transverse-directionally inner side portion, in plan view of the vehicle body. A rear edge of the first wing is inclined such that its transverse-directionally outer side portion is located on the vehicle body front side relative to its transverse-directionally inner side portion, in plan view.

A saddle-riding type vehicle includes: a vehicle body frame; a swing arm supported in a swingable manner with respect to a pivot frame of the vehicle body frame; and a rear suspension in which a link arm supported by the swing arm and the pivot frame are coupled, and damping is controlled by a hydraulic oil. In addition, the saddle-riding type vehicle includes: a sub-tank provided in the rear suspension and storing the hydraulic oil; and a detection sensor that detects behavior of a vehicle body while traveling. Moreover, in a top view of the saddle-riding type vehicle viewed from above, the sub-tank and the detection sensor are disposed so as to overlap with each other.