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Bottom bracket query

jai7783jai7783 Posts: 56
edited July 2013 in Road buying advice
I've got a 2012 Giant TCR composite 2 with a basic shimano crankset and a shimano integrated bottom bracket. I want to change from a compact std shimano crankset to a Sram Red 53/39 but I'm a little confused due to BB options.

Can I swap out the integrated bb for Gxp or BB30? What's the difference between the Italian and English thread?

Please help.


  • You mean its got a pressfit shimano bottom bracket? You should be able to get it removed and fit a sram gxp bb
    I'm sorry you don't believe in miracles
  • BozmanBozman Posts: 2,518
    SRAM gxp press fit BB, £30
  • Monty DogMonty Dog Posts: 20,614
    BTW you can't fit BB30/PF30 as you frame isn't compatible. Hope make a GXP adaptor bush that fits into the non-drive side of your existing BB to allow you to use a GXP crank - can't guarantee it will work as a number of factors come into play. Alternatively, get a SRAM GXP BB86 press-fit bottom bracket.
    Make mine an Italian, with Campagnolo on the side..
  • jai7783jai7783 Posts: 56
    Thanks Monty
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