These came up a couple of months ago here, but I couldn’t find the original thread. They seem to have just added for ktm/husky. Anyway, I have them on my Thruxton R and they are pretty nice for cleaning up throttle slop on that bike. Prices seem to have gone up though :/
I just got the new spacers from ducatispacers. Install was a breeze.
While you’re at it, install a layer of friction free sliding drawer tape around the bars to take out the slop, and put some powdered graphite on it. So your up/down rattle of the tube is fixed as well and the tube operates super smooth.