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Old 05-13-23 | 07:21 AM
  #3  
easyupbug
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Joined: Jan 2013
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Bikes: too many sparkly Italians, some sweet Americans and a couple interesting Japanese

I have read there is an ISO ( Internal Organization for Standardization ) standard of 6mm, I see lots of 4mm on frames/forks/brakes and in my retirement community where the roads are kept clean I can get away with slightly less but no way in gravel/wet.
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