I have been looking at those kind of grips too. I think you could get almost any kind of 1" rubber grips to fit, they are all over the Internet if you do a quick search. But I also want white rubber on the forward controls, and that is a bit more tricky. Transparent red, green or gold flake a'la Frisco style would be slick to
I have a few other projects to complete first, but white rubber has been on the list for some time now. Much cooler than all those standard Küryakyn ISO Grips you see on every bike nowadays.