Is there any good aftermarket option that IS NOT official power part?

did u quick ebay search, and didnt really find anything for 990 superduke... losts for other KTMs tough...

I've got these and they are really nice.

http://www.ebay.co.uk/itm/Front-Riser-3 ... Swf-VWW~Ar

(that might not be the cheapest place to buy them BTW, just the first that came up. If you search for "foot peg risers" or "M factory" you might find other retailers).

What exactly are you looking for?

Motohooligan sells adjuster plates for the stock rear sets that lets you move them up and back in set increments.