Originally Posted by
velo-orange
Shimano never made an ISIS crank.
If you are replacing the crank and BB, go with the recommended BB spindle length the crank calls for. Make sure the BB is the same width (some mtn bikes have 73mm BB shells).
It is a Nashbar crank - sorry if I didn't mention that. I see what you mean. The cranks call for a 122.5mm spindle length, equating to a (68mm)x122.5mm BB. This is my first attempt at replacing the front end of my drivetrain - tools are next.