A saddle-riding vehicle includes a radiator in front of an engine of the saddle-riding vehicle and on one lateral side of the vehicle in a vehicle widthwise direction with respect to a center line in the vehicle widthwise direction. The radiator includes: a radiator body that allows coolant of the engine to flow through the radiator body; a radiator fan at a rear face of the radiator body; and a fan cover that covers the radiator fan from a rear of the radiator fan to guide exhaust air from the radiator to the one lateral side in the vehicle widthwise direction.

There is provided a wheel assembly for a vehicle. The wheel assembly comprises an in-wheel motor, an axle, a first wheel bearing, and a lock nut. The in-wheel motor comprises a stator, a rotor and electromagnets. The stator is fixedly connected to the axle. The stator comprises the electromagnets. The rotor coaxially surrounds the stator. The first wheel bearing is arranged on the axle to rotatably connect the rotor to the axle. The lock nut is arranged on the axle. The axle has an engagement portion that is adapted o engage with an upright of the vehicle. The engagement portion is between the first wheel bearing and the lock nut. The lock nut is arranged to clamp the upright between the first wheel bearing and the lock nut.

When the distance indicated by distance information received by a Bluetooth module (31) is less than a predetermined first reference distance (KY1), a guidance image (33) including a distance image (33a) and a direction image (33b) is generated, and this guidance image (33) is displayed on a combiner (26) of a helmet (20). By stopping the display of the distance image (33a) of the guidance image (33) and continuing to display the direction image (33b) from when the distance indicated by the distance information becomes less than a second reference distance (KY2) shorter than the first reference distance (KY1) to when the guidance point is reached, the driver's attention is focused on the direction image (33b), so that a mistake in the direction of travel at the guidance point can be prevented.

This transmission device includes a mode changeover switch (59) on which a mode changeover operation between a manual mode (M2) and an automated mode (M1) is externally performed, other operation unit (80) on which a predetermined shift operation is externally performed separately from the mode changeover switch (59), and a control unit (60) configured to control a mode changeover between the manual mode (M2) and the automated mode (M1). The control unit (60) executes the mode changeover between the manual mode (M2) and the automated mode (M1) on the basis of the mode changeover operation on the mode changeover switch (59). When the shift operation on the other operation unit (80) has been performed, the control unit (60) executes the mode changeover between the manual mode (M2) and the automated mode (M1).

A fuel tank structure that makes it difficult for mud, water, dust or the like to enter a fuel tank and that can restrict a fuel leakage path when a vehicle falls. A fuel cap includes a cap body mounted to a fuel supply port of a fuel tank, and a pressure adjusting device provided in the cap body to adjust a pressure in the fuel tank. In the fuel cap, a space is formed as a hermetically closed space in which the pressure adjusting device is accommodated, and the space communicates with an exterior of the fuel tank via a breather tube.

A rear drive transmission system for a motorcycle includes a driving wheel, a center wheel, and a driven wheel. The center wheel includes a transmission wheel A and a transmission wheel B that are coaxially arranged. The transmission wheel A is fixedly connected to an opposite surface of the transmission wheel B. The driving wheel is drivingly connected to the transmission wheel B. The transmission wheel A is drivingly connected to the driven wheel, and the driving wheel is detachably and fixedly connected to an output shaft of a motor or engine. The driven wheel is detachably connected with a rear wheel shaft of the motorcycle. The center wheel is rotatably connected with a rear fork rotation center shaft through a bearing. The motorcycle is with the motorcycle rear drive transmission system.

Disclosed is a solution to the use of a speed limiter in a motorcycle that has a high capacity for acceleration, including a method for limiting the speed of a motorcycle using precise parameters of speed, acceleration and required engine torque and a single control button to manage the smart activation and deactivation of the limiter and to input new speed limits V.sub.lim in a simple way. It thus allows the use of a speed-limiting system in a motorcycle that has a high power/weight ratio by avoiding the sources of interference with the riding and the effects liable to jeopardize its stability.

A saddle-ride vehicle includes: a head pipe; a frame extending rearward from the head pipe; a down frame extending downward from the head pipe or a front end portion of the frame; an engine and a radiator supported by the down frame; and an engine hanger that is attached to the down frame and supports the engine, and the engine hanger integrally includes a radiator support portion that supports the radiator.

Herein is disclosed a straddle-ridden vehicle frame stiffener comprising a support structure for stiffening the straddle-ridden vehicle frame, the support structure comprising a first side; and a second side, adjacent to the first side; a first mounting element for removably mounting the support structure to the straddle-ridden vehicle frame, the first mounting element being attached to the first side; a second mounting element for removably mounting the support structure to the straddle-ridden vehicle frame, the second mounting element being attached to the second side; and wherein the first side and the second side are rigidly connected to one another.

A motorcycle may include a step operating mechanism including a base member, a pivot member, a pivot shaft, and a locking mechanism. The base member may be supported by a first portion of a frame member. The pivot member may extend from the base member in a motorcycle width direction. The pivot member may pivot along a straight line orthogonal to the pivot shaft and may be configured to be received by a docking cavity of an associated electric scooter. The locking mechanism of the step operating mechanism may be configured to lock or fix a front portion of the associated electric scooter to the pivot member when the pivot member is received by the docking cavity of the associated electric scooter. The motorcycle may include a second locking mechanism supported by a second portion of the frame member.