Hey guys rode the 450 for the first time with the Carbon Pro Exhaust. Had it jetted as well. Let me tell you. It went from Bad Azz to Super Bad Azz. I cannot believe this bike now. Easier to start, runs better overall and not once did i need the hot start while I rode. Stalled her like 2-3 times and she fired right up without hot start. Definetly A++++++. If your looking to get an exhaust for your bike i would highly recommend the White Bro's carbon pro exhaust.