All components related to the drivetrain and brakes - shifters, derailleurs, crankset, brake levers, and brakes - are collectively referred to as a bike's groupset.
There are currently three major manufacturers who make complete groupsets: Campagnolo, Shimano, and SRAM.
These lists contain each major manufacturer's mountain groupsets in roughly ascending order of quality.
Campagnolo does not currently manufacture mountain groupsets
- X01, X01 DH
These lists contain each major manufacturer's road groupsets in roughly ascending order of quality.
- Super Record
Chorus, Record, and Super Record all have EPS variants, which shift using servo motors rather than cables.
- Dura Ace
Ultegra and Dura Ace both have Di2 variants, which add electronic shifting in a manner similar to Campagnolo's EPS systems.
Red offers the eTAP variant, which functions similarly to EPS and Di2, but is wireless, rather than wired.