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  1. #1
    mtbr member
    Join Date
    Mar 2008

    Crankset S-Works MTB vs. road

    Is the width of the crank house on the S-Works MTB models (e.g. Epic) and road (e.g. Tarmac ) now the same? Specialized call them both OSBB. The road crank house used to be narrower than MTB OSBB which is 84 mm.

  2. #2
    mtbr member
    Reputation: S-Worker's Avatar
    Join Date
    Jan 2010
    Road cranks have a smaller q-factor (i think about 148) than mtb cranks (164) so the bottom bracket shell may be equal but the chain stays are not identical.

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