They seem to be universal fit type rather than oem
Ducati Race Bike Silencers | eBay
Outlet to Centre of bracket 220mm. WHEEL & BRAKE. LIGHTING & BRACKETS. Read on. Our Ref : 102826. Fixing bracket length : 150mm. FILTERS AIR OIL AND FUEL. Reverse point of inlet: 75mm.
www.ebay.co.uk