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Sept. 30, 2016, 11:30 a.m. -  Tehllama42

#!markdown Rear derailleur is closer to rocks and stuff, and the Q factor is necessarily larger. Tiny bit heavier hub is required. Yup, that's about the sum total of downsides. Nothing's perfect, and particularly if being paired with expensive Di2 derailleurs or the humongous Eagle stuff, it's a very valid concern… but that's pretty much it for downsides.

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