I bought one a while ago and although I do not have much to compare it other than the stock exhaust, it is 10 times better. I didn't notice any power loss and is very easy to install. Shipping was very fast. Also, if your bike has an O2 sensor you are going to have to drill a hole for it. Here is a pic:

 

yeah it definately looks better. and ive got an 01 so no o2 sensor thankfully but i have to get a custom midpipe to mount it a little bit higher. it sounds good though?

 

+1 I hate how low that mid mounts im making myself a custom one as well

 

want to make me one too?

 

lol im mounting mine udertail like this so it wouldnt do ya much good haha

 

oh no thats fine just make me a new subframe and tail too i dont mind

 

lol and do the 600rr swing arm conversion haha

 

hey if you insist its ok by me