If you do need transmission parts again, ask. It is one of the things that dealers charge a lot for. Oh, I guess you are in France? Not sure what your choices are over there. But you can use generic bearings which are much cheaper than dealer bearings. Actually you guys can get better parts in general I think.
On my way back to work right now. I have to change the gear oil in my bike this week.
Never memorize something you can look up.