dremel to remove burrs and casting lines. steel wool with WD40 to act as solvent. 800 grit wet/dry sandpaper over dremel marks. elbow grease. certainly the dremel and sandpaper tales off the anodizing. though i don't think the steel wool does. if the bike were to spend any time in the wet, or even outside under cover it should probably be coated with something to keep the aluminum from oxidizing. wax would suffice short term. I read about a product someone used after vapor blasting an engine on a thread here somewhere. it's low on my priority list right now.
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MC21R9N track
MC18R2J track
CBR954
CR250