Shimano bottom bracket cups compatability

tartan_army
tartan_army Posts: 81
edited May 2009 in Road buying advice
Looking to upgrade my compact to double. Probably get the Ultegra double which I understand I usually need to buy the cups/bb seperately. Is it only the Ultegra range cups that will fit or can I 'upgrade these'. Reason I ask is I see that the Dura Ace cups are literally only a few quid more expensive so I'm guessing the performance difference is going to be fairly low but might be worth getting them if they fit. I'm wondering if the 7900 Dura Ace only fit 7900 cranks but 7800 Dura Ace cups might fit other Hollowtech II cranks. Anyone know if this is right?

Thanks

Comments

  • maddog 2
    maddog 2 Posts: 8,114
    AFAIK they are all interchangeable. The MTB ones are different (wider) but any road BB should be fine.
    Facts are meaningless, you can use facts to prove anything that's remotely true! - Homer
  • GavH
    GavH Posts: 933
    I've used a 105 BB with a Tiagra chainset and IIRC I could have used a Dura-Ace BB if I wanted, hence you should be fine with an Ultegra chainset and DA BB so long as both are HT2.

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