Superbikes don't typically make us weak at the knees—but if we had to spring for something racy, it would probably be Italian. We wouldn't say no to the 140 horsepower Ducati 848 Evo, for example. So when NCT Motorcycles told us they had just finished an 848, we assumed the bike had been crashed. But no: the Austrian shop just wanted to build a sporty cafe racer—with classic looks married to modern tech. “We wanted to customize a bike that’s younger than the ones we normally work on,” says…