Shimano 105 CS-R7100 12-Speed Cassette

The Shimano 105 CS-R7100 12-Speed Cassette is a key component of the new 105 12-speed Di2 drivetrain.
This cassette has an 11-34t range, delivering a low gear combination that lets riders take on steeper slopes with greater control.
There is an optimized "sweet-spot" gear for maximum pedalling efficiency, and the new 105 cassette is compatible with 11 speed freehub bodies.
The new Shimano 105 12 Speed di2 groupset brings the benefits of semi-wireless electronic drivetrains to their workhorse line of components.
Pro level features are now available for every-day cyclists.