I've been looking around for a new exhaust system for my S2R also and was looking at the Staintune. I wrote to them a couple of times and got a responce back real quick and they also supplied extra photo's. My only sticking point was that the header didn't look like it supported the O2 sensor for maintenance. A quick phone call confirmed this. Based on my feedback Staintune is now looking at improving the header but I didn't get a time frame. The mufflers themselves look a lot like the one I have fitted to my SV650 and it sound great! A mate had staintunes on his M900 and it too was impressive. I did have a video of his bike and will scan through my files to see if I can find it.
