Results 1 to 9 of 9
  1. #1
    Proud bike-o-holic
    Reputation: Psycho Marco's Avatar
    Join Date
    Nov 2008
    Posts
    911

    Question about XTR crank installation

    Hello all,

    I have a XTR crankset installed in my current bike which has 73mm bottom bracket width. Im thinking about buying another frame which has a 68mm BB width.

    My question is: Do I need to do or buy something in order to install the crank in the new frame?? Someone told me I need some spacers, but I dont know where to buy them.

    Regards

  2. #2
    mtbr member
    Reputation: oldskoolbiker's Avatar
    Join Date
    Jun 2005
    Posts
    1,600
    You'll need to add a 2.5mm spacer on each side.

  3. #3
    mtbr member
    Reputation:
    Join Date
    Jul 2004
    Posts
    1,102
    External BB XTR, old Octalink or Square Taper BB? If it's a square taper XTR, then you need a new BB for 68mm shell. Also if it is square, do check the BB spindle length as there are shorter ones out there.

  4. #4
    ups and downs
    Reputation: rockyuphill's Avatar
    Join Date
    Nov 2004
    Posts
    13,980
    Most any bike shop should have a huge box of spare spacers.
    I'm a member of NSMBA and IMBA Canada

  5. #5
    mtbr member
    Reputation: amillmtb's Avatar
    Join Date
    Jun 2005
    Posts
    2,422
    Quote Originally Posted by oldskoolbiker
    You'll need to add a 2.5mm spacer on each side.
    For a standard 68mm shell you will need 2 2.5mm spacers on the Drive side and 1 on the Non-Drive side.
    Attached Thumbnails Attached Thumbnails Question about XTR crank installation-picture-1.png  


  6. #6
    Proud bike-o-holic
    Reputation: Psycho Marco's Avatar
    Join Date
    Nov 2008
    Posts
    911
    Ok, thanks all for your support.

    I will order them ASAP.

    regards

  7. #7
    A Mountainside=My Therapy
    Reputation: ColoMtb20's Avatar
    Join Date
    Mar 2009
    Posts
    136
    Is that installation diagram just for the xtr? my gxp bb runs without any spacers on a 73 mm. Is there a problem?

  8. #8
    ups and downs
    Reputation: rockyuphill's Avatar
    Join Date
    Nov 2004
    Posts
    13,980
    No it's Shimano only, SRAM/Truvativ have a different approach that make them unfriendly to e-type derailleurs and BB mount chainguides
    I'm a member of NSMBA and IMBA Canada

  9. #9
    A Mountainside=My Therapy
    Reputation: ColoMtb20's Avatar
    Join Date
    Mar 2009
    Posts
    136
    Ok thanks for the info. That's what I was hoping to hear.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •