The akra gp can sounds about right. Not to loud but loud enough while you keep the cat. I messured about 99db.
When you go to a full system then it's mega loud.Peaked at 116db but that may have been it popping making it go that high.
But it's definatley well over the 110db mark.
I have a full set of the honda luggage for the africa twin.
Good condition panniers use for one trip only.
Top box used regular. Comes with one key fits all cases. ?500