That quoet is from me. I rode for 6 months with the stock exhaust. I've changed several things on the bike and they all helped the way I feel riding on a motorcycle. When I changed the exhaust so I could hear the bike, It was like,.......... AAAHHHHHHHHHHHHHHhhhhhhhhhhhhhhh. Then I wondered why they didn't come from the factory like that to begin with. I don't think it's any louder than a stock Harley. Well maby a couple of Db's, but not obnoxious.
It doesn't sound like a TRIUMPH, with the stock pipes.
Get the bike, ride it for a while, You'll kick yourself in the but for not getting the pipes throw in with the bike loan and payed for right from the get-go. A couple of pennys a month compaired to having to come up with a few hundred all at once later on. Just my Humble Oppinion