Shimano Hollowetech II BB compatability

clanton Posts: 1,289
edited May 2011 in Workshop
Probably a stupid question but I'm desperate - does anyone know if the hollowtech II bb's are interchangeable - specifically would a Shimano XT hollowtech II bb work with a Shimano 105 (road) chainset/bb shell?

Also posted in MTB section.


  • maddog 2
    maddog 2 Posts: 8,114
    not really. The MTB cups are slightly narrower and they are designed to run with 3 spacers, whereas the road BBs run no spacers, so the central sleeves are different.

    If you ran MTB cups with a road sleeve you'd be close.
    Facts are meaningless, you can use facts to prove anything that's remotely true! - Homer