Got mine last week. Currently have no tools or place to put it on as I am in an apartment at the moment, so took it to a dealer. They threw it on for me in under .5 hours.
Rode a full tank of gas to empty this weekend to test it out.
Some observations:
As others have said, does not completely remove the wobble, but, wow, what a difference! Road 2 up all day yesterday and wife asked me why I was taking curves so fast today. "Because I can!" was my answer.
Was on the freeways and the twisties around San Diego, choosing roads that had varying conditions and that I was familiar with so I had a base line to compare.
Curves were much, much better; faster and more stable. Funny I was expecting a huge wobble on some cures and it was just no longer there, replaced by a big grin. F Freeway seemed the same unless I hit a reflector or changed lanes. Nothing side to side there anymore.
Not 100% sure, but thought I might be getting a little, and I mean a little, vibe in the grips. But, as I said, could be in my head. Took my hands off the bars on several different roads and the bike seems, seems, to be tacking a bit to the left. Nothing major, just didn't know if it was there before (don't think so). Dealer and tech said that is normal (of course) as the belt and drive is on the left. Now that the bike is tighter, it may be more pronounced.
Either way, brace kicks a$$ and I am glad I did it.
If you are on the fence, I would recommend the 280 it cost and do it. I could feel a lot wobble before, but didn't realize how drastic it was until it was gone.
Arthur