I have the 1 3/4 Rox risers. I really like them to get the bars higher and farther forward.
Fitment issues to be aware of:
Cable length is close. I have the Magura SX bars, so not very high rise. I don't think the stock cables will work with a higher rise.
The Rox risers move the center-center distance of the top clamps. Going by memory here - KTM stock is 90mm, after adding the Rox risers, it was 100mm. This worked out great for me because I had a Fastway top plate and bash bars that fit. If you want the Rox risers, you'll need to get the right HWDB top plate.