Dating campy components
A road bike’s groupset, or “gruppo”, refers to any mechanical or electronic parts that are involved in braking, changing gear, or the running of the drivetrain.
That means the shifters, brake levers, front and rear brake calipers, front and rear derailleurs, crankset, bottom bracket, chain, and cassette.
The newest version of Shimano’s top end groupset is the Dura-Ace R9100 series.Shimano 105 is considered Shimano’s first performance groupset, and for many people it is the best option in combining performance, value and longevity.Ultegra is next and is very similar to Dura-Ace in terms of performance, though Dura-Ace is lighter. Shimano currently produces Ultegra and Dura-Ace in electronic versions, denoted by Di2, and newer Dura-Ace, Ultegra and 105 models now come with disc brakes.If you’re buying a bike, then, after the frame, the groupset is the second thing that you should look at, and is a key determining factor in working out whether the bike in front of you offers good value for money or not.There are three main manufacturers of groupsets and bike components.