Subject: RE: how often do you replaceIt will depend on the type of BB. I have had BB's last 10,000 miles and it was only replaced because I switched spline types. That was an Ultegra Octalink. I now have a FSA Platnum Pro ISIS (no need for me to go to two piece cranks yet ) on my road bike and that has about 3,000 on it. Just make sure to do simple maintenance to your bike and most quality items should last a long time. |