Muffler is an oem muffler off a 2001 Yamaha R1 then shortened approx. 5". The full exhaust weights roughly 8 lbs. Will take more photos when I get the pipe off so you can see the merge collector and the header flange better.
Heres what the inside of the muffler looks like. Notice the three seperate chambers , and the arrows I drew to show the path the exhaust goes thru. Nice and quite, can even talk on the phone while running it without distorting the phone even while standing next to it
Going to see if I can get in very shortly, found a dyno 40 minutes away and 5 minunts from work. Want compare it to the fmf, and my center mount I made a few months ago.