Thread: For those with a GXP BB setup
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Old 10-01-13 | 05:03 AM
  #12  
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Kimmo
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Bikes: https://weightweenies.starbike.com/forum/viewtopic.php?f=10&t=152015&p=1404231

It's the BB shell width. If the crank spindle fits a 73mm shell, it needs five mm of spacers on the cups to fit a 68.
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