Spare Parts for RTW Ride

[liketoride2]

I'm planning a RTW ride for this summer on my 2004 KLR 650 (A model). Would anyone have suggestions as to what major spare parts to take - I'm not asking about things like cables and levers which are a given, but any components that one would especially like to avoid failing in the middle of Siberia, for example. Such as oil pump, water pump, doohickey parts (I already have the Eagle upgrade), etc. Are there any such parts which might be particularly prone to failure on the KLR? I would like to be well prepared, but also not to foolishly take anything which is highly unlikely to be needed, since packing space is at a premium on such a prolonged trip.

Thanks in advance for any advice.

Mike