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Discussion Starter · #1 ·
I have been searching all over the net for information on the Bolt circle diameter (BCD) of the stock crankset. I just bought the bike and I am considering upgrading to a 1x10 setup but I cannot figure out what the crank ring size is that I need to buy the first time I tried to measure it was 101.5mm the second time i got 105.5 using a different method. Before I order it I would like to know for sure what size it is. Thanks for any help.
 

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Discussion Starter · #3 ·
that didn't help, without a very accurate measuring tool you can't use that website.

I did however find a printout on the wolf tooth page in their FAQ I was able to use that to hold it up to my crankset and looks like the 2001 Giant NRS3 stock chain ring is 104mm
 
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