How loud is a Duncan Fatboy for a 450R? My buddy is thinking about getting one but is concerned it will be too loud. We have an agreement with the landowner where we ride that we will keep things as quiet as we can. I know you can get a spark arrestor and a turndown for these that quiets them up a bit but even with that is it loud?

 

Those are loud, even with turn down. If quiet is important get a quiet muffler. I have an fmfQ2 on my 450, and it is great. Like 5 pounds lighter,too.

 

they are loud. i've ridden with a guy who has the fatboy pipe and it's louder than my DMC which is rated at 102dbs or less.

 

Is that with the spark arrestor and turndown or without?