New shape of the external components enables the rear derailleur to move according to a different angle and the new internal design keeps the chain nearer the cassette to ensure better power transmission, greater and more secure traction Embrace technology Special chainring positioned inside the gear body acts on a rectangular section spring that allows the component to move along a trajectory that perfectly follows the curve of the sprockets The new two-part system is 53% lighter than steel and 22% lighter than titanium, without compromising resistance and rigidity levels and prolonging component life Carbon fiber cage plate results in a shifting positioning that is exceedingly precise and extremely light Ceramic bearings for a very smooth action that in turn reduces friction, prolongs life and shifting performance Speed 11sp Ceramic bearings for a very smooth action Carbon fiber cage plate Optimized for use with the new H11 drivetrain system two-part system is 53% lighter than steel and 22% lighter than titanium