I've got a 2016 1200R with Termis - no reason why they should be any different. Allen key on wheel side on outside and looks like a captive nut on the inside of each barrell.
Legend....thanks for that. It would seem that mine have been removed at original install by Ducati. And there was me wanting more noise hahaha
Ducati Glasgow did the same with mine. Baffles never been fitted, still wrapped in tissue paper in the box. Which is where they will be staying.
