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SIDI SHOES AND ACCESSORIES ***Better Performance***

Derailleur

Derailleur, as if its French name describes what it does, is a mechanism that moves the bike chain from one sprocket to another while keeping the chain taut at all times. It is an essential part of a bicycle with more speeds than one. The biggest manufacturers are SRAM, Shimano and Campagnolo.  Find them at Velo Deals!

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