Giant's international page calls them Formula...I doubt they spec'd something different for North America, they just called them a different name.
As far as bearings, pull them out and measure the inner diameter, outer diameter, and width. Use this chart to find the right size
http://www.vxb.com/Merchant2/merchant.mvc?Screen=SRCH
As far as bearings, pull them out and measure the inner diameter, outer diameter, and width. Use this chart to find the right size
http://www.vxb.com/Merchant2/merchant.mvc?Screen=SRCH