Campagnolo's Super Record 11 Cassette boils down to buttery smooth and hyper responsive shifting. Campy's top tier groupset features Ultra Shift technology, meaning each and every tooth of the Super Record 11 cassette is shaped to perform a specific function. Whether the chain is being lifted or lowered, Ultra Shift relieves pressure on the chain, the rear derailleur, and the cassette itself. This results in unbelievably quick and quiet shifting that you can rely on. The Super Record 11 Cassette is built with both titanium and steel, providing the perfect combination of lightness and durability. The six largest cogs are made out of titanium, lightening the cassette considerably. Because the smallest cogs see more use and thus wear faster, Campagnolo built these with a sturdy nickelchrome coated steel. In addition to shaving weight with the 6 Ti cogs, the Super Record 11 cassette features a lightweight alloy lockring and a splined aluminum frame, which also increases the overall torsional stiffness.