I just got an Arata system for my 600RR. Dman, what a nice bit of gear. I was so impressed, I got the distributorship for them in Oz. For the guys in Oz, if you haven't seen one of these systems, they are unbelievable. And power, it made 3 h.p more than the Serpent system did with 5h.p more in some places where the Serpent put some dips (down low).