Externasl Bearing Bottom Backet Sizes

Chris65
Chris65 Posts: 41
edited October 2012 in Workshop
I Have a Trek 2.1 which has an external B/B. The Chainset is a Shimano R-600
I am thinking about changing the B/B and would like to do the job myself. (I know as a one off it may be cheaper to let the lbs do it).
The B/B is a 1.37 24. I have looked on the net for a replacement but got confused by the different ones.Will a one compatible with shimano 105, ultegra etc do or have they to be compatible with the chainset.

Comments

  • maddog 2
    maddog 2 Posts: 8,114
    any Shimano road BB will be fine.

    You can also use other brands - CK, Hope, RaceFace, Acros etc. Just stay away from GXP - it's a different design, and MTB (narrower cups)
    Facts are meaningless, you can use facts to prove anything that's remotely true! - Homer
  • Monty Dog
    Monty Dog Posts: 20,614
    R-600 crank is Ultegra equivalent, so BB-6700 is similar quality, but anything up from Tiagra BB-4600 is compatible.
    Make mine an Italian, with Campagnolo on the side..

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