I don't have an opportunity to photograph it just yet, but it's not overly complex.
You should have 2 bolts and washers/nuts. One long, about 15cm or something, and one shorter, maybe 5cm.
Behind the footpeg you will see 2 holes which were probably used to support the 2 bros as well.
The shorter bolt goes through the front hole and the muffler's front mounting hole.
The longer bolt goes through the second hole and all the way across to be tightened on the other side behind the chain.
I have an Arrow on the scoot right now but I'll try and take pics if you can't get it sorted.
Just went out and looked at the old muffler.
On top of it are the two flanges with a tube in between them. The short bolt will go through the bare hole in the right flange, the long bolt goes all the way through the tube.
You'll probably have to remove the right footpeg to get at the mounting bolts. I hung mine with a bungee strap to keep it from harming the brake line.
Last edited by Shatrat; 09-29-2009 at 08:22 PM.