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Shimano BB/FSA crank compatibility

bianchichrisbianchichris Posts: 26
edited July 2014 in Workshop
I have FSA Gossamer cranks and a worn out Mega Exo BB that I want to replace. The question is, can I replace it with an Ultegra BB - BB6700 is looking favourite but is it compatible with the FSA cranks?


  • arlowoodarlowood Posts: 2,380
    Tend to see mixed opinions on this question. Spindle diameter is the same as Shimano so should work OK but I have seen others say they are not compatible.

    FYI on this thread part way down there is a pic of a Gossamer crankset fitted to an Ultegra 6700 BB.

    The Hollowtech BB's are pretty cheap so it's worth a gamble
  • paul_onabikepaul_onabike Posts: 194
    I have had 2 gossamer cranks,
    First one, I had to lightly emery the plastic insert on the Shimano Ultegra BB to make it fit, the second one was a tight fit - but it did fit. You also should use a torque wrench with gossamer cranks, as you could have problems with the spindle.

  • Thanks for the replies guys. Just ordered one so fingers crossed it works!
  • Well it fits - took a bit of a tap but nothing too dramatic. I'll take it for a test ride this evening.
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