碟刹 is for mountain bike, race bike use U break

來源: soccer123 於 2012-07-25 22:07:25 [] [舊帖] [給我悄悄話] 閱讀數 : (64 bytes)
回答: 起碼也得是碟刹吧。 由 coorslight969 於 2012-07-25 16:53:57

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

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