You are reading a single comment by @diceface and its replies.
Click here to read the full conversation.
-
Fair enough, I had another look and the UN-72 is one of the old design where both cup are not fixed to the body.
I think the UN55 is the replacement of the UN-72 (the UN-26 have a plastic non driveside cup), the newer Shimano threaded bottom bracket nowadays have an intergrated cup on the driveside.
edscoble
@diceface
I honestly have no idea but I was hoping that someone would know something about it.
I just had a very good experience with that particular component and felt like sharing :D