The 570 is the works bike ridden by Smets.A 540 power up kit is available from KTM (SXS kit) but i think the 02 will still be a 520(no need to change it):D
The only consideration to that is next year the 520 will be illegal for AMA competetion in the 250 class, therefore the speculation that the 400 will be bought up to 450 and the 520 come with some un-identified size increase to remain the "big bore" baby.
Who knows?
I'd take an extra 50cc if it was in the same set of cases :)
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