Originally Posted by
ArgoMan
Thanks. I think the one I have on is also a Ultegra level BB. So it's fine. My TT bike on the other hand has a RS501, which I believe is an entry level BB (correct me if I'm wrong.) So it may be worth the upgrade to a DA since I do race that bike.
I would only “upgrade” it when the old one is worn out and/or creaking. It will not affect your race performance in any meaningful way. Don’t overthink this one, it’s really insignificant.