For race fans, the American International Motorcycle Expo in Columbus, Ohio, is a den of temptation and allure. Within a hand’s reach are today’s most lauded roadracing machines. These bikes represent the pinnacle of two-wheel technology and overwhelm the eye with pristine welds, exotic milled metals, and carbon fiber so perfect it should be in a museum. More than that, these bikes are pieces of motorsport history, contributing to the never-ending wheel of racing lore and legend. Here are a few of the most notable bikes and parts that make us go weak in the knees.