Hollowtech 2 – road and mtb the same? – Bike Forum

pk-ripper

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Need to put a new bb in my road bike and have a spare XT one. Will it fit the ultegra cranks ok, as not sure whether they're interchangeable?

Posted : 20/07/2009 11:31 am

racing_ralph

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think so but not road on an mtb due to shorter threads??

Posted : 20/07/2009 11:38 am

barrykellett

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I think roadie cups are shallower so you're crank axle won't reach through enough the other side

Posted : 20/07/2009 11:42 am

Mister-P

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Road cups are 1mm wider IIRC.

Posted : 20/07/2009 11:56 am

[Closed] Hollowtech 2 - road and mtb the same?