looks like the magic search words are: 90MM+130MM bike grips (left is longer, right is shorter) , though I don't know the diameter of the bars, many of the grips I see are 7/8's, or around 22.2mm so maybe that's a standard or universal diameter.
wow that looks incredible. I'm ordering my Cheetah in about a week, I hadn't realized all the modding capabilities. Mostly I just hoped I could find handgrips that fit as I'm not crazy about the stock brown leather ones.