I have
I just bought a swing arm and the stainless steel header from them. Id do business with them again. I dealt with a guy named Trevor, he said they have been doing this for awhile and have been doing parts for the Kawi ?KSR(kawi's version of the grom) for quite a while.
Dealings went well they had a problem getting a part, gave me some options, and I ended up getting what I wanted after all. Communication was good. From day of order to my door step was probably a little less than a month. Which is normal for getting grom parts, almost everything I have bought comes from overseas.