Originally Posted by
scottrbenn
Or let's say I don't even need to replace the bottom bracket, but just want to replace the crankset (both sides). What do I need to be aware of to be sure what I buy fits?
Depending on what you buy, you may or may not need to update the BB. If it has the same connection to the crank (square taper, octalink etc) and the same width to maintain the right chainline, you are good, if not....you need to get a BB that matches the cranks.