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Rollin' a fatty
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5,863 Posts
Depends on your cranks

I use XTs on my VT and the size is 113x68.

Try the Everything Drivetrain and Giant Manufacturer forums for quicker responses.
 

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579 Posts
68x113 is very common...but watch out if you have LX crank

Newer, FC-M572 LX crankset req's 68x121 bb (ES-51.) The M572 is stiffer and lighter than the smaller armed M571. Not sure if the added weight of the ES-51 over, say a ES-71, negates the weight savings.
 
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