Silky smooth gear changes are characteristic of each Dura Ace group. The cassette steueren this überragendem shift feel in a substantial part. Designed exclusively for the chain tooth shapes and switching aids a gear change can be described almost as a sliding of the chain between different gears.
As a technical high-lights the cartridge has 6 small steel pinions for high durability and 5 larger pinion of titanium for minimum weight. Due to the different load on the small and large sprocket large titanium sprocket wear just as slow as the smaller steel pinion. In order to respond to the call for ever lighter components sets Shimano the largest sprocket also on a carrier made of carbon fiber reinforced plastic. This newly designed carrier is lighter than the previous Spider aluminum with mechanical properties at eye level!
Material: aluminum, steel, titanium, carbon
Switching stages: 11
Weight: from 166g