I think you will find a couple of variants in shaft length, shock body length, not just between KTM and Husaberg, but between years themselves- ie top out spring vs non top out spring shocks- but the fact of the matter is its all 5018 and the clevises will swap over- and length is tuneable by juggling spacers etc (I believe Race Tech now offer off the shelf internal spacers)
A smart shock buyer would do all the research first to determine what is suitable- but with the amount of Husabergs that end up as part outs I cant really see the need to build a Berg shock out of a KTM unit.
Its a pretty non specific question (the original one)- hence the non specific answer .I believe its PDSs we are talking?? :wink: