I have looked around and didn't see the info I was looking for.

The bottom of my top muffler is bluing from the discharge of the lower muffler. Here is an older thread with the exact same issue on a Dyna:

https://www.hdforums.com/forum/dyna-...r-muffler.html

My bike has about 6k miles on it. I have owned it for the last 1300. As far as I know everything is stock.

I did not notice this previously, so I am not sure if it was always there, or if it was a recent development.

Is this common? Or does it indicate that my bike is out of tune? I have thought that it gets pretty hot, but I don't have anything to compare it to.

Thanks,

 

sure you'll probably get a lot of different views on this, mine is just coming from my own experiences on mine.

I got my bike with 2k miles on it, put the shortshots on and within probably 2k more miles i checked them and seen a lot of blue, so it may be normal? hope it helps!

 

Your pipes will get blue, but your heat shield shouldn't.

 

My pipes are a little blue, but the heat shields are fine. What I was surprised about was the muffler.

My muffler is coloring exactly where mywideglide noted in his post in 08.

 

Normal on stock bikes.

 

Not sure what model year your bike is? If it's a 2010 or newer they have 'cats' in each muffler. These will create hot spots for sure. A good set of slip on's will cure this.

 

Thanks for the replies. I guess I left out some info when I posted.

It is an 08 Heritage. I was thinking of putting on some slip-ons at some point anyway.

I guess this is a good argument for pipes that end in the same spot instead of the staggered. I always thought they looked better that way anyway.

Thanks again.