I find for a general clean G101 works quite well to get the dirt and grease off.
I resprayed mine last weekend:
Used G101 to remove dirt ect
Sanded down to create something for the paint to stick to
Cleaned with cloths to remove dust
Sprayed with colour and then top coated.
Link to this G101 if you have it mate?
Mine are in pretty bad shape, will i need anything stronger? some people say Brake / clutch oil with wire brush, clean then paint.
Also, is painting with a brush a bit easier than spraying bearing in mine i would be doing it outside?
Thanks