Givi has a range of universal screens for naked bikes, mounted via the headlight bracket. Although the screens are a universal style and fit multiple bikes, they need a bike specific kit for fitting.

GS 247A / GS 247N - Universal screen, 29 x 28.5cm, available in smoked (247A) or black (247N)
Requires bike-specific fitting kit, sold separately - see listings below for available kits. 

GS 245A / GS 245N - Universal screen, 33.5 x 29cm, available in smoked (245A) or black (245N)
Requires bike-specific fitting kit, sold separately - see listings below for available kits. 

GS 246_ Universal screen with Black (GS 246N902) or Silver (GS 246G730) painted bottom frame. 38 x 33.5cm.
Requires bike-specific fitting kit, sold separately - see listings below for available kits.