I have a set of used Akrapovic Titanium Muffler. One of the lightest exhaust! Build quality is incredible, second to none. I can confidently say that because I have been through many exhaust systems, Eisenmann, Meistershaft, IPE etc.
Condition: 9/10, used for 5k miles.
Price: $2600 picked up in the Norcal Bay Area, CA