Bedouin,
So far there are no problems at all. I have about 3000 miles on it now and have only adjusted it once after the initial install. It has not stretched any at all, even under some pretty decent torque going on.
It is about the same feel as the 18 tooth sprocket and gets me 40-45mpg at indicated 80-90 mph.
It feels a lot smoother and is tons quieter than the chain, but with the Tpipes I didn't hear the chain much anyway.
It is a very nicely made product too, very good metal and will last a lifetime I am sure.
The install was pretty easy actually, when I get my stuff together i will post a how-to page with the pix I took. It is no harder than pulling your rear wheel. Don't let the swingarm removal sweat ya, it's a snap with a bucket and a 2x4.
