Semper Fi Marine, here in the North Carolina mountains the Triumph off road short pipes are great. They are relatively quiet but when you get on the throttle you instantly know a Bonneville is in the pack. I really like mine on my Bonneville America and would not change a thing. The shop here also recommended them and was able to do the install and modifications that actually increased performance along with that great Triumph sound. From one Marine to another ride safe and get the Triumph pipes...Carry On.