Love the M4. In my opinion it is the best sounding exhaust out there and looks very sharp as well. Looking forward to the pics/vids.Chancelor said:Well guys I've been out at sea forever now and I just ordered the M4 for my 2012 ZX-6R. When I get home I'm gonna put it on. I'll take a before and after video and photos. I hope it sounds as good as I hope!