Let me preface this answer with; I am in PA and the weather is pretty rough. I've been riding with a full face helmet and that makes it difficult to hear much of anything, so they don't sound real loud to me at all. At the same time, even sitting still and cranking the throttle didn't sound real loud until I had someone else hit the throttle and I stood behind the bike. That made a huge difference. Getting out on the highway, what I did hear from the pipes does seem to tone down significantly when you are cruising along at speed. I had the opportunity to hear the pipes best when a technician took my bike for a ride after tuning it. From the spectator point of view, they had a nice deep sound and there is no mistaking the sound of shifting gears and giving it the throttle. It sounded real sweet, but it was not at all to the point that you wanted to plug your ears when the bike took off. I don't know how else to describe it, other than I'm very pleased with the tone and volume. I don't think I would want them any quieter, nor louder. Of course, everyone is going to have their own opinion as to what sounds good or bad, but I don't think I have seen anyone on this forum yet to complain about the sound on these, in any of the sizes. I would have to assume that this group of CVOers would be a very picky group, and the lack of any negative comments swayed me to give them a try. I'm glad I did.
I had already told a few friends that my thought process was that I was only spending $143 on these and if I didn't like them, I figured that I could sell the mufflers with the Fullsac baffles already installed for the $143 I had into it to someone on the forum. Then I would go and buy the aftermarket mufflers that I would have otherwise purchased and not have to lose any sleep over it at all. Deep down, I thought that this is exactly what would happen. I was pleasantly surprised once I fired them up.
Remember one thing...when you are sitting on the bike, you don't hear anywhere near as much sound as the folks behind you. You've got to get behind the bike to really get a good listen to what they sound like. These mufflers seem to do a particularly good job of muffling the sound to the point where you don't hear nearly as much from sitting on the bike. I think they are real quiet from the driver's seat. I was truly amazed at the difference in sound when I got behind the bike and really liked it when I heard it drive away.