If you haven’t heard of Pierobon, you owe it to yourself to do a little research on the brand.
Known best for making race frames for Ducati motorcycles, the company has produced a few complete racing machines that are absolutely gorgeous (we hear they go pretty good around the track, as well).
For your reading consideration, check out the Pierobon X60R with its DesmoDue 1100 EVO air-cooled v-twin engine; the Pierobon X80R, which is powered by the Testastretta 848 liquid-cooled engine; and then there is the Pierobon F042 street bike.
Now, we can add to the list the Pierobon X85R, which uses the Superquadro engine from the Ducati 1199/1299/899/959 series of motorcycles.