Since the honda forum never helps me i was woundering if you guys can help thanks guys. Hey people Iam looking for a pipe for around 250 for my 400ex. I was woundering how the FMF Power Core IV Q Silencer is and what all i need to get with that? Or should i go with the FMF Megamax II Exhaust? Is all i need to add with the pipe is a K&n airfilter or what? Please let me know everything i need to know what this stuff all suggestions iam open to. Thank you very much my fellow riders