Parts such as the 35a - Left Pannier: Kit Pannier L.h. Bare, Cover External L.h., Cover Internal L.h., Pannier Lock Kit L.h. are included in the Ms1200s 2013 My13 (multistrada 1200 S Touring) D160-00013 35a - Left Pannier parts fiche.
The component with the lowest price in the 35A - LEFT PANNIER schematic is the Series Of Belts.