To start off, yes it will be loud.  Not as loud as you might think, but loud.  A few tests done on other bikes have shown it to actually be quieter than an open Two brothers exhaust at higher RPM, but a couple of decibels louder at idle with the silencer removed.  Considering my bike had a burned out Two brothers system installed, this should actually be an improvement for me in regards to noise, and I like the look a lot more.  The price for this is $230 shipped.  If you are interested in order