| 摘要 |
A protective cover for a derailleur includes a top cover member for covering a top portion of a derailleur, a front cover member coupled to the top cover member for covering a front portion of the derailleur, and a rear cover member coupled to the top cover member for covering a rear portion of the derailleur. In a specific embodiment the top cover member, the front cover member, and the rear cover member define an open lateral outer side. A collar is provided for fitting the protective cover to a structural member of the bicycle.
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