How do you know which dura ace group set you have on your bike?

To identify which Shimano Dura-Ace groupset you have on your bike, check the model number printed on the components, typically found on the crankset, derailleurs, and brake calipers. The Dura-Ace series includes various generations, such as 7800, 7900, 9000, R9100, and R9200, each with distinct designs and features. Additionally, you can look for specific features like the number of gears (11 or 12-speed) and the style of the shifters. Consulting the Shimano website or user manuals can also help confirm the specific model.