Super lightweight Shimano Dura Ace R9200 12sp 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