Bottom bracket sleeve is not fixed I gave my bike to the mechanic a few weeks ago since I have had some problems with my Token bottom bracket. He mounted a new Rotor BBright 4624L on my bike. Coming back from a gravel ride yesterday I heard that there is sand in the bottom bracket somewhere and I took off the crank to clean everything. There I saw that the tube that usually is connected with the bottom bracket is loose. Hopefully you can see this on the pictures. I have never seen something like that before and want to know whether this is normal.
My bike is an Open U.P.
The sleeve provides a tiny amount of extra protection for the bearings and is not structural in this instance.
They are often fiddly to fit on these &quot;boutique&quot; bottom brackets and even people who deal with them frequently can cock up the tube alignment from time to time.
You may be able to break it up with a screwdriver, if it's brittle enough, to remove the pieces. Otherwise you will need to whip the BB out to remove it. Not having the tube there won't affect bearing life in any meaningful way unless you regularly fill your frame with sand.