Thank you BianchiGirl and HillRider. Your comments really helps. I have confirmed that the bottom bracket shell is 68mm long and that the length of the axle is 121.5mm and it is unsymmetrical.

This leads me to another question:

If the axle is unsymmetrical wouldn't I need to somehow specify the unsymmetrical measurements? What do I measure exactly, from end of axle to what? Or is this information coded on the axle?

Here's some pics of the bottom bracket axle I am measuring. It's in great shape but I can't use this particular axle to replacement my warn axle as it belongs to another identical bike.

http://picasaweb.google.com/Cadabyss...eat=directlink

Thanks!