After 200 miles with mine, I am very happy, works great! There are some install pics earlier in the threadFound this on Amazon by Dimotive. I you get it let us know how it works. But I agree with the others that its not needed, At 150mph my bike is very stable without one.
The bike is stable at speed, but some extra damping might be useful when accelerating out of turns. Can be seen, for example, in this video -