Z Zeke's Dad New member Mar 30, 2010 #1 I have a road bike with an older style shimano cartridge BB, and would like to upgrade the crank, but the newer tiagra triple crank has the new style BB with the outboard bearings. Are they interchangeable?
I have a road bike with an older style shimano cartridge BB, and would like to upgrade the crank, but the newer tiagra triple crank has the new style BB with the outboard bearings. Are they interchangeable?