Yes those are the bearings then simply buy replacements that have the same part number, type in in ebay and many sellers will show up.
6001rs I know is the cover plate bearing and 6902rs is a freewheel or cassette bearing.
My cassette had two (stacked with a shim in between so make sure you haven't missed one.
If the feel rough then they are fit for the bin, likely the balls are misshaped or dry.
My BPM made a noise one year under rotation so I replaced the bearing and added some more grease to the planet gears, one simple cheap part and it makes all the difference. It only needs slight roughness in a bearing for it to sound bad.
6001rs I know is the cover plate bearing and 6902rs is a freewheel or cassette bearing.
My cassette had two (stacked with a shim in between so make sure you haven't missed one.
If the feel rough then they are fit for the bin, likely the balls are misshaped or dry.
My BPM made a noise one year under rotation so I replaced the bearing and added some more grease to the planet gears, one simple cheap part and it makes all the difference. It only needs slight roughness in a bearing for it to sound bad.