I agree, excellent design. I struggled back in the '80s to build a couple of my own from the old Magura side pull Enduro throttles. Cut and glued them and they worked damned well. This is a neat easy to change system that should work great. Don't know what the cost is, but I spend a couple of hours back when I worked on mine to get them done. Hardest part back them was to find a really good glue to be strong enough and hold everything together.
Swiss
After I built mine I thought that I was pretty smart, but then I went and bought an early XR75 for my son to ride and found out that Honda had done this on the stock bikes in the early '70s! :nod: