What kind of pipe is this

This pipe was on my bike(1982 1100 SPECTRE) when i got it. I am thinking that it is a MAC because of the size of the outlet (about 2 1/2 inches). I am thing about getting rid of this and going back to the original style. There is nothing wrong with this other than the discoloring and the fact that oil changes suck because the pipe makes it tough to get a pan under it i just like the 2 pipe look. a couple of pics

another pic

and another

That looks like my friends yoshimura pipe cept that the very end of it is shaped a little differently. Does the baffle remove?

Yes the baffle is removable. Nice and quiet sounds really good with it removed.

Yep...it is a MAC...I also inherited one on my KZ1000A's. I may keep mine and paint it black...bike is going to be sold anyway.

I don't think that is a MAC. The MAC doesn't go straight under the motor and has a different muffler.

It's not exactly straight under the motor. All four pipes star coming together on the left side and then kinda curves around the oil filter and exits on the right side.