So i just installed the kerker stout 4" mufflers with the cat still in place on my 11 road glide custom and i must say, what a difference in performance and sound. I heard over and over how changing just the mufflers will not improve either of these, but it does. Nice deep rumble at idle and powerfull sound when on the throttle, I can really feel a power increase. I Been thinking bout getting rid of the cat but i dont know now, i'm not really bothered by the heat like others. Still need to finsh the stage 1 with AC and tuner, But they sound great just the way it is. And no popping when downshifting at higher rpm. Just wanted to share my experenice with a muffler thats not the most common

 

i was up against the wall on the 4" stouts and kerkers got the stouts and they do sound good, i also still have the cat in, with the XIEDS and the a/c it runs great.

 

Are you happy with the xieds or do you think you are going with a tuner in the future? I also been debating on the xieds.

 

yes I'm happy with it seems to be doing the job along with the captains crotch-cooler really knocked down on the heat, no tuner, I'm not going any farther with this one, I'm just out for the cruise. I've had a lot of comments on the pipes saying how they liked the growl on them till they ask the price (LOL) but ya get what you pay for.

 

Are they loud at cruising speed? Can you hear the tunes going down the highway?

 

the 4" stouts aren't loud at cruising speed and you can still here the radio good. this is about the best video i could find on the 4" stouts, the bike in the video is totally stock with the cat still in they do sound good. http://www.youtube.com/watch?v=_GIuC...layer_embedded

 

at cruising speed at 70 you can hear the radio as good as with the stock mufflers, they only get a lil loud when your on the gas