Mountain Biking - What is this mean??

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View Full Version : What is this mean??


FreeRidin'
07-06-06, 09:50 PM
I'm lookin at inner bashrings right now and im wondering what the two different sizes are for, on this site.
http://www.universalcycles.com/shopping/product_details.php?id=4039&category=58
At the top is says they are both for up to a 36tooth chainring so what is the 58mm and 64mm reffering to?


Funkychicken
07-07-06, 12:19 AM
no idea. i know the e13 bashguards post 2 different sizes that refer to the 4 and 5-bolt patterns, this could be the same thing.

MattP.
07-07-06, 12:47 AM
Bolt Circle Diameter

http://www.sheldonbrown.com/gloss_bo-z.html