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428 or 520 sprockets, which last longer
The Lifan 200 has 428, the Roketa (Zong) 200 has 520. It would be handy to have the same size on both so I could carry just 1 spare master link and section of chain in the tool kit I swap between bikes. Does anyone have evidence that 520 sprockets last longer than 428 or vice versa?
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