Shimano Cs-r9200 Dura-ace 12 Speed Cassette

Super lightweight 12speed HG+ cassette with a rigid carbon and alloy carrier for excellent shifting even under the most demanding gear changes. Hyperglide+ sprockets have a computer designed tooth configuration with contoured shift gates resulting in a crisp smooth shift even under load. Close ratio gearing allows a more efficient use of energy through finer cadence control Largest sprockets are mounted on lightweight alloy and carbon carriers to reduce weight and increase rigidity 5 largest sprockets are made from titanium to reduce weight without sacrificing strength Sprockets are extensively cut away and drilled to further reduce weight without reducing rigidity Nickel-plated finish offers hard wearing resistance to corrosion Alloy cassette lockring For Super Narrow 12-speed chains