Been searching the archives for wheel bearing numbers and have only found one post....6203 2RS for the rear, maybe the same for front??
Can somebody confirm this please. Also the cush drive holder bearing number if I'm not stretching the friendship too far.

Rear Wheel

Hub: 6203-2RS
Sprocket carrier: 6304-2RS

For seals you'll need...

23 x 40 x 7 (disc side)
30 x 52 x 7 (sprocket carrier)

Front Wheel

6203-2RS and 2x 23x40x7 seals

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Once again Pleiades comes to the rescue. You're a champ, thank you.

Just found some 6203VVCM NS7S bearings in my shed. Any idea the difference between these and the 2RS? The VVCM has seals either side.

They are a deep groove bearing. I guess they'd fit as the size is the same. Whether they're suitable for this application I wouldn't know?

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After some researching the net it seems both types of bearings are of the deep groove type and both are suitable for motorcycle wheel bearings. What the exact difference is between the two I couldn't find.