DO NOT plan to ship parts in. Consumables can generally be carried, and I would recommend doing so. Shipping parts in is possible but is time consuming at the collection end and involves all manner of import duties, bribes and extra charges - and we're talking in the DHL office here...
So - carry plugs, oil filter a rear tyre and a front sprocket. That will see you right for 16000 miles, which is plenty to get you back to a "civilised" country where you can buy a new chain and sprockets, a new pair of tyres, some new plugs and another oil filter...
Well, that's what I plan to do for my next trip having made the mistake of shipping stuff around the planet this time round.
'02 Africa Twin (sold), GSX-R 1000 K5 (sold), '97 TL1000S, '08 DRZ400 SM/S, '92 CRM250