Yes, 100-03 and 100-04, but as I know, they must have different sizes.
Found, 100-03 - 6802, 100-04 - 6803. But it is not so easy to find 2RS versions.
The item, which brings more pain when searching, is WC87008. Can’t find it in my town.
About bearing for rear axle, is it what Strida uses:
technobearing.ru/eshop1/product … -6002-2rsh