they aren't as loud as I thought they would be, but they are a lot louder than what I had before. I haven't gotten to drive it yet, as the exhaust isn't welded yet and there is SNOW all over anyway. I am sure it will be really loud when I get on it. My husband had it at idle in the driveway while I was in the shower and I could hear it, even in the shower (with the water on, LOL). My friend heard me revving it and she lives around the corner. I guess it is loud enough (lol).