I have an 07 and was wondering if the stock exhaust for that year is hard to beat. I dont care about sound except for quieter possibly but I want to see some performance if im going to drop money on this. I have heard that the 08-09 models need new pipes but never heard of the 07. People always over hype pipes so just cause it sounds cool doesnt mean your bike is reacting a lot different. just dont want to be shined on.