The following documents I have collected might help the discussion? I hope they are useful. I believe the US Panigale R engine numbers follow the code: 4BVx******. 4 = New SBK. B = Twin Cylinder 90deg Liquid cooled. V = 1198cc liquid fifth step (1199 superlegerra). x = Year (G=2016). '*' = Sequential engine number. The Italian registration document code for the engine is: 1198WL. The categories seem to follow relevant parts of the code provided to the US government by Ducati for a MY14 VIN, as above. Tom.