A vehicle includes left and right main frames that may have their front ends connected to a head pipe, and may be disposed such that the distance between the left and right main frames is progressively greater in a rearward direction. The left and right main frames may be connected to each other by an upper plate-like member, and the upper plate-like member may have a front edge spaced rearwardly from the head pipe and have left and right ends welded respectively to the left and right main frames.

An inverted tube bike frame with bottle opener gusset system is a bicycle frame with the top tube and down tube having a heightened profile with concave sidewalls and a bottle opener gusset strengthening the joint between the seat tube and the top tube. The top tube has a downwardly curved design for added mechanical strength. Other tube-members of the frame have an elongated elliptical cross-section for increased strength and impact damage resistance. The wheel base is wider than that of a standard bicycle adding to forward movement stability and rider comfort. The design of the frame provides added strength and increased frame life with rugged service.

A drop-out mounting structure for mounting a drop-out member as a wheel mounting unit to a drop-out mounting unit of a bicycle frame is disclosed. The drop-out mounting structure includes: upper and lower assembly slots respectively formed at an upper end and a lower end of the drop-out mounting unit to insert the drop-out member inside the drop-out mounting unit; and a stopper unit formed in a front and rear direction at an upper end part of the drop-out member. In particular, the drop-out member is inserted to the lower assembly slot through the upper assembly slot by turning the drop-out member in a direction and turned in other direction while being moved in a rear side such that the drop-out member supports an inner upper end of the drop-out mounting unit through the stopper unit, and is fastened to the drop-out mounting unit by the bolt.

A drop-out mounting structure for mounting a drop-out member as a wheel mounting unit to a drop-out mounting unit of a bicycle frame is disclosed. The drop-out mounting structure includes: upper and lower assembly slots respectively formed at an upper end and a lower end of the drop-out mounting unit to insert the drop-out member inside the drop-out mounting unit; and a stopper unit formed in a front and rear direction at an upper end part of the drop-out member. In particular, the drop-out member is inserted to the lower assembly slot through the upper assembly slot by turning the drop-out member in a direction and turned in other direction while being moved in a rear side such that the drop-out member supports an inner upper end of the drop-out mounting unit through the stopper unit, and is fastened to the drop-out mounting unit by the bolt.

A drop-out mounting structure of a bicycle frame to inhibit a drop-out member from being separated from the bicycle frame is disclosed. The drop-out mounting structure of the bicycle frame for mounting a drop-out member as a wheel mounting unit to a drop-out mounting unit of a bicycle frame through a bolt may include an assembly slot formed at the drop-out mounting unit to insert the drop-out member inside the drop-out mounting unit and a stopper unit formed at an upper end part of the drop-out member with a length that is longer than an opening end of the assembly slot.

A drop-out mounting structure of a bicycle frame to inhibit a drop-out member from being separated from the bicycle frame is disclosed. The drop-out mounting structure of the bicycle frame for mounting a drop-out member as a wheel mounting unit to a drop-out mounting unit of a bicycle frame through a bolt may include an assembly slot formed at the drop-out mounting unit to insert the drop-out member inside the drop-out mounting unit and a stopper unit formed at an upper end part of the drop-out member with a length that is longer than an opening end of the assembly slot.

A seat rail of a motorcycle has two side members configured using fiber-reinforced resin. Each side member has a main body and an upper flange portion that protrudes in a width direction of a vehicle body from an upper side edge of the main body. An attachment element for attachment to the main frame of the vehicle body is provided at a front end portion of each side member, and the seat rail has at least one upper connecting member that connects two upper flange portions. The upper flange portion has an inflection section connecting the front section and the rear section such that the rear section of the upper flange portion is raised toward an upper direction with respect to the front section, and the inflection section is arranged between the front end portion of the side member and a foremost upper connecting member.

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. The vehicle further includes an engine supported by the frame assembly and operably coupled to the front and rear ground-engaging members, and the engine includes a throttle body assembly. Additionally, the vehicle includes an air intake assembly fluidly coupled to the engine and including an airbox and a mounting plate having a first channel and a second channel. The first and second channels are configured to align with the throttle body assembly. The mounting plate is configured to couple the airbox to the throttle body assembly.

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. The vehicle further includes an engine supported by the frame assembly and operably coupled to the front and rear ground-engaging members, and the engine includes a throttle body assembly. Additionally, the vehicle includes an air intake assembly fluidly coupled to the engine and including an airbox and a mounting plate having a first channel and a second channel. The first and second channels are configured to align with the throttle body assembly. The mounting plate is configured to couple the airbox to the throttle body assembly.

A body frame of a two-wheeled motor vehicle includes a first frame extending rearward from a head pipe, a second frame disposed beneath the first frame with a gap there between, a third frame disposed beneath the second frame with a gap there between, a plate-shaped first reinforcing member provided between the first frame and the second frame, and a plate-shaped second reinforcing member provided between the second frame and the third frame, and the first reinforcing member and the second reinforcing member are formed so that external shapes thereof are connected. Thus, it is possible to provide a body frame for a two-wheeled motor vehicle that contributes to cutting the number of components and increasing the stiffness.