| 摘要 |
A wheel for a two-wheeled motor vehicle and including a hub, a rim, a spokes coupling the hub and the rim. The hub has a lightening portion formed inside a sprocket flange such that there remains sufficient flange strength and sufficient weight reduction is realized. The lightening portion is axially inside a bearing insertion hole, opens radially inwardly and has a maximum diameter longer than diameters of the bearing insertion hole and an axle hole.
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