Every Harley comes stock with a catalyst exhaust of some type and has since 2010, it was EPA mandated. Sportsters have catalyst mufflers, this does not mean it will have a cat you can see such as in the bagger headpipes. I have never personally seen inside stock sportster mufflers but I can guarantee they are cat equipped.
-Ryan

 

What I don't understand is why there is one in front muffler and not one in rear muffler. Could this be a mistake at the factory? My bike was built in Kansas City,MO. Bought new here in KY. Anyway I want it out. That things looks like it almost has the pipe totally plugged. Thanks for all the replies.

 

I can only assume this was done because it was all that was needed to meet minimum EPA requirements. I have no solid info as to why.

 

Ah ha...so it did have a cat, it was just some kind of hidden cat in the slip on muffler, not the primary?

Man, that makes me want to hack that thing in half and see what's in there, but can't do that, I may need to throw them back on someday if I move to a place that actually checks emissions.

 

There is actually a trace amount of platinum in there.
I am allergic to cats. They make my ears itch for more sound.

 

Have muffler and headpipe off. Going to take to work tomorrow and see if I can do some platnium mining. Hopefully end up with a better sound.

 

I checked my mufflers and its impossible to tell. They are NOT stamped "catalyst", they have plenty of stamping on them, but no mention of that word....not that I guess that means much.

They are heavy bastards though.

 

My 06 Sporty does not have a cat, and neither have any of the other Sportys I have worked on.

HOWEVER:

First the Dislaimer: I never like to spread gossip, and I can't vouch for this information...but..

I have heard from a few people, that HD experimented with cats of a limited number of 06 Sportys. Like I said, I can't verify this, and I don't really know how reliable the sources of this information....

So, take it for what it's worth.

 

I'm in Cali and my stock nighster had that printed on as well when I asked about it they told me it's referring to baffle type for Cali .I'f one pipe is missing it I would say they cutt rear one out. I did this cutt one out chk sound for a day then cutt both center holes out

 

I'll take photos if I can get this punched out so eveyone can see what I see.