Racing bicycle, in particular for time trials, triathlons or suchlike, comprising a frame provided with a head tube, a top tube and a fork connectable on one side to the head tube and on the other side to a wheel of the bicycle; in the fork one or more apertures are made for the passage of the air, made between the external surface of the wheel and the top of the head tube; the one or more apertures are configured to allow at least part of the stream of air that hits the bicycle to pass in a central zone of the bicycle and in proximity to the frame; the top tube is positioned above the one or more apertures in order to leave the central zone free, and therefore not interfere with the stream of air passing in the central zone and below the top tube.

In an embodiment, there is provided a motorcycle comprising at least one front wheel, at least one rear wheel and a vehicle body, the vehicle body comprising a substantially open elongate duct extending longitudinally through a central portion of the vehicle body between an open inlet aperture arranged at a front portion of the vehicle body and an open outlet aperture arranged at a rear portion of the vehicle body.

In an embodiment, there is provided a motorcycle comprising at least one front wheel, at least one rear wheel and a vehicle body, the vehicle body comprising a substantially open elongate duct extending longitudinally through a central portion of the vehicle body between an open inlet aperture arranged at a front portion of the vehicle body and an open outlet aperture arranged at a rear portion of the vehicle body.

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.

An off-road vehicle having a frame, a plurality of ground engaging members operably coupled to the frame, a seat supported by the frame and configured to support an operator, an engine supported by the frame, a body supported by the frame, and a liner coupled to the body, where the liner is configured to be positioned between the body and a heat source of the off-road vehicle, and an air gap extends between the liner and the body.

A seat assembly for a vehicle having a longitudinal axis includes a seat pan, a cover support adjacent to the seat pan, and a seat cover that has an upper surface, a first longitudinally extending side surface and a second longitudinally extending side surface. A heating and cooling module is disposed at least partially within the cover support. The seat assembly further comprises a first air inlet in communication with the heating and cooling module. The first air inlet communicates air from a first port in the seat cover to the heating and cooling module.

A vehicle includes an engine unit, a radiator, a first passage, and a second passage which is provided below the cylinder head and to which lubricating liquid is supplied. The radiator is arranged in front of the engine unit. The first passage includes a first opening arranged in front of the radiator so as to face the radiator and is configured to guide first traveling wind from the first opening toward the radiator. The second passage includes a second opening arranged outside the first opening in the vehicle width while being partitioned from the first opening, and is configured to guide second traveling wind from the second opening toward the lower supplied member.

A front cowl structure of a saddle-type vehicle includes a first front cowl portion and a second front cowl portion connected with each other via a concave portion. The concave portion expands in the left-right direction and inclines upward as the concave portion extends rearward. Left and right end portions of the first front cowl portion each have an inverted wing shape in a side view of the saddle-type vehicle.

A front cowl structure of a saddle-type vehicle includes a first front cowl portion and a second front cowl portion connected with each other via a concave portion. The concave portion expands in the left-right direction and inclines upward as the concave portion extends rearward. Left and right end portions of the first front cowl portion each have an inverted wing shape in a side view of the saddle-type vehicle.