Abstract: There is provided a vehicle frame structure for a motorcycle having an appealing appearance, which structure can be assembled lightweight and compact in size and at a reduced cost. The vehicle frame structure includes a head block (2) including a head tube (3), a main frame (11) forked leftwards and rightwards from the head block (2) to form a pair of main frame half portions (11a, 11b) extending rearwardly thereof, and swing arm brackets (8) extending downwardly from rear ends of the main frame half portions (11a, 11b). An inner frame portion (21) of the main frame (11) and the swing arm brackets (8) in their entirety or respective inner portions of the swing arm brackets (8) are integrally formed by an inner member (19) prepared from a metal casting, and at least an outer frame portion of the main frame (11) is formed by an outer member (20) prepared from a sheet metal.

Abstract: To provide a motorcycle front body structure of a simplified design, which contributes to reduction in motorcycle height and air resistance, by the employment of a dedicated removable cover for selectively opening and closing the access opening defined in an undersurface of the lamp unit, the motorcycle front body structure includes a fairing (21) having a lamp opening (21a), a lamp unit (23) positioned in the lamp opening (21a) and having an undersurface formed with an access opening (23c), and a cover (24) removably fitted to the lamp unit (23) for covering the access opening (23c). The lamp unit (23) and the cover (24) have respective undersurfaces exposed to an air flow passage (40) above a front wheel (3).

Abstract: There is provided a vehicle frame structure for a motorcycle having an appealing appearance, which structure can be assembled lightweight and compact in size and at a reduced cost. The vehicle frame structure includes a head block (2) including a head tube (3), a main frame (11) forked leftwards and rightwards from the head block (2) to form a pair of main frame half portions (11a, 11b) extending rearwardly thereof, and swing arm brackets (8) extending downwardly from rear ends of the main frame half portions (11a, 11b). An inner frame portion (21) of the main frame (11) and the swing arm brackets (8) in their entirety or respective inner portions of the swing arm brackets (8) are integrally formed by an inner member (19) prepared from a metal casting, and at least an outer frame portion of the main frame (11) is formed by an outer member (20) prepared from a sheet metal.

Abstract: To provide a motorcycle front body structure of a simplified design, which contributes to reduction in motorcycle height and air resistance, by the employment of a dedicated removable cover for selectively opening and closing the access opening defined in an undersurface of the lamp unit, the motorcycle front body structure includes a fairing (21) having a lamp opening (21a), a lamp unit (23) positioned in the lamp opening (21a) and having an undersurface formed with an access opening (23c), and a cover (24) removably fitted to the lamp unit (23) for covering the access opening (23c). The lamp unit (23) and the cover (24) have respective undersurfaces exposed to an air flow passage (40) above a front wheel (3).