Yes - lower bottom tube bearing 100-04 means 6803Z a standard bearing for ~ 2€
The easiest way to find is a local google search using 6803Z
I’m afraid at your local Strida dealer only - for 200 € upwards.
You need not exactly this, as I wrote above you can use a common
blind bearing puller (kit) like below
- which will cost you also ~ 200 €
Solution: You need a local bearing specialist (= already owner of those tools).
OMG - NO!!!
If you do will the rear hinge be overloaded (by missing guidance at the front end) and the frame will wear out massively!
