Thread: Interchangable BB
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Old 09-06-12 | 10:37 AM
  #6  
jimc101
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Joined: Oct 2007
Posts: 5,773
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From: West Yorkshire, United Kingdom
Originally Posted by lem0ndrider
Thanks, I'll start looking. Do I need 68mm or70mm?
You need to measure your frame for that.

68mm is normal for road bikes with English thread

70mm is Italian thread for road bikes

73mm is normal for MTB's

get yourself a vernier caliper to confirm.
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