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  • Shimano press fit bb question
  • oldfart
    Full Member

    What’s the difference between BB91 and BB71 please thank you ! 😀

    Olly
    Free Member

    20?

    Probably width of the shell in mm?

    Speshpaul
    Full Member

    its a range thing, when they first came out they were 91-Dura.
    Now theres a 71 which is more Ultegra/XT.
    its the 1 or a 2 that will catch you out. a 91 will not fit a hole for a 92.

    euain
    Full Member

    However, both the BB-91 and BB-91 are for BB92 fitments.. 😯

    Don’t you love standards..

    andytherocketeer
    Full Member

    More a case of “don’t you just love product level naming conventions with names/numbers almost identical to the BB standard, that are so similar it’s impossible not to get confused”.

    oldfart
    Full Member

    So the 91 is better than 71 then ? Bit like XTR Vs XT ?

    Speshpaul
    Full Member

    yeap. whether you can spot the difference i don’t know.

    oldfart
    Full Member

    Better quality ? Seals bearings or not ?

    Speshpaul
    Full Member

    “whether you can spot the difference i don’t know.”
    this

Viewing 9 posts - 1 through 9 (of 9 total)

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