Harley mufflers on a gl1500

[SMSgt]

I put HD Road King mufflers on my 03 RSV and it sounded great. So much so that I kept them when I sold it and thought I might build the adapters put them on the GL to see how I like it.
The main thing I don't like about the RS is that the stock mufflers don't come out to the tail end of the conversion.

 

[Condor]

With stock HD mufflers is the touring models has a extra baffle in the left Side muffler. Much more restricted. The Dyna bikes has the cat in the muffler. Again restriction.

This only holds true for a couple of years before Harley got smart and moved the Cat up into the header. I believe the years to stay away from are '06-'08?... Baffles in straight thru's don't restrict, but cut down on the db's.

 

[dirtdobber]

Dyna bikes still have the cat in the muffler.
Not so sure if soft tails do or not but all the rest has em in the header. I am using factory mufflers on my street glide 2012. The left side as all the rest I have had the left muffler is restricted. This is why it is called 2 into 1 into 2.
i ,was going to upgrade the mufflers on it and use them on the RS GW trike. I decided not to because of the left side is restricted in the mufflers