I just traded in a 2014 Valkyrie for a 2016 F6B. The Valkyrie pipes were much louder. I liked the sound and it never bothered me on long rides. My buddies said it sounded like a 6 cylinder sports car. The 2016 F6B seems pretty quiet to me. The end caps were different also. The Valkyrie had 3 exit holes in each exhaust pipe, while the 2016 F6B has one larger hole in each exhaust pipe. Cannot compare the 2016 to earlier year F6B's. Just my 2 cents.