Originally Posted by
Trentkln27
I was looking at the shimano website to look at specs on MTB cranks. I know mountain bikes have a different width bottom bracket shell than road bikes but anyway the new shimano mtb cranks look like they have the 4 bolt pattern. Do you thinks I could get the rings and fit them to a newer road crank?
The BB she'll does not usually differ between road and mountain. What differs is the chainline. Road setups are usually designed for a 45-46 mm chainline. Mountain setups are designed for 50 mm. Bottom bracket shells are usually 68 or 73 mm. It is the length of the spindle that is changed to attain the desired chainline.