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Shimano Dura-ace BB-7900 Italian Threaded 70mm Bottom Bracket

Item No. »  SH-BB7900I-BASE

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Have you ever heard the words "you need a new bottom bracket"? What they really meant was you need a Shimano Dura-ace 7900 bottom bracket for your Hollowtech II crankset. Shimano re-engineered the 7900 BB cups for greater durability and a smoother pedaling motion. Get on it....

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