I have just bought (er, my fiance bought) a 2007 1200 Custom. The exhaust note is real nice - sounds a lot more growly than a new 2010 model. So, is it stock or is it a debaffled muffler? It does have a HD part number 64842-04 on it (both mufflers).

I can see all the way through the muffler, through the perforated inner screen. There doesn't appear to be any place that could have had a baffle attached to it.

If it didn't even have an obvious baffle, then, I guess the stock sound is pretty nice

 

i doubt their stock...
all stock exhausts ive heard are quiet.