碟刹 is for mountain bike, race bike use U break

来源: soccer123 于 2012-07-25 22:07:25 [] [旧帖] [给我悄悄话] 阅读数 : (64 bytes)
回答: 起码也得是碟刹吧。 由 coorslight969 于 2012-07-25 16:53:57

every parts are carbon fiber, maybe whole bike just 10 LB

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