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  • BB Threading – Italian or British – how do I tell?
  • TwirlipoftheMists
    Full Member

    My road bike, a 2008 Scott CR1, needs a new bottom bracket. I was about to get one from Merlin but the item page offers British Standard and Italian threading. I have no idea which I need.

    Any tips?

    –Twirlip

    Posted 13 years ago
    TheBrick
    Free Member

    scott will be ISO / British threading but to double check Italian b.b shells are 70mm and ISO 68 mm.

    Posted 13 years ago
    cynic-al
    Free Member

    It will be British. Only Italian frames, and mostly older ones at that, have italian threaded bbs IME.

    Posted 13 years ago
    TwirlipoftheMists
    Full Member

    Brill. Thanks.

    Posted 13 years ago
    Macavity
    Free Member

    British BB left and right hand threads.
    Italian BB right hand threads on both sides.

    Posted 13 years ago
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