A duct main body (81) is formed by coupling of left and right passage forming members (82, 83) to each other. A duct attachment portion (91) of a stay (90) is attached to an upper surface (81 a, 81 b, 81 c) of the duct main body (81). At this time, inner p...

To provide a two-wheeled small vehicle on which is mounted an OHV engine having smaller and compact size, compared to conventional OHV engines of small size. In a two-wheeled small vehicle with an engine, having a head pipe retaining a steering shaft and h...