The original sprocket for the Kawasaki Versys-X have a build in spacer on the inner side that is 3,5 mm wide.
I like the new sprocket type with the rubber dampers on both sides of the sprocket, but this is only available for the Versys-X in the original 14 tooth size, and I prefer the 15 tooth size to lower the RPM a bit.
I can get a 15 tooth sprocket (with the rubber dampers) that fits on the gearbox shaft splines, but it comes without the build in 3,5 mm spacer.
But I have a lathe and some internal parts from a BMW F800 front fork, and was able to change it into a 3,5 mm spacer 👍👍👍