This is a rear hugger or splash guard for the rear wheel of a Multistrada 1200. It is an OEM part and is made of plastic (ie not carbon fiber). I bought it for my Multistrada but never installed it. I no longer have the Multistrada so do not need this.
As far as I know it fits 1200 Multistrada's from around 2010 to 2014 but cannot guarantee this.