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| Within the cycling and mountain biking communities, dérailleurs are much talked about and debated over. The truth is, dérailleurs affect the gear shifting during a ride, and because of that, they are fairly important equipment parts. For the most part, short cage dérailleurs  are traditionally used by cyclists, while long cage dérailleurs are generally employed by mountain bikers. But it really depends on what kind of bike you have, what you plan to ride with it, what your chains and pulleys are compatible with, and what suits you as a rider. If nothing else, pick one that makes you comfortable in your ride, because riding should not only be relaxing yet exhilarating, but also fun and enjoyable. | 
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