A bicycle derailleur comprises a base member structured to be mounted to a bicycle frame; a link mechanism having a first portion and a second portion, wherein the first portion of the link mechanism is coupled to the base member, and wherein the second portion of the link mechanism is disposed above the first portion of the link mechanism; and a chain guide coupled to the second portion of the link mechanism so that the chain guide moves relative to the base member to move a chain among a plurality of sprockets.

 
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> Warning device for bicycle
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