SHIMANO CS-6500 Ultegra Bicycle Cassette (9-Speed, 11/23T)
Brand: SHIMANO

Three largest sprockets are mounted to an alloy carrier to reduce weight. Computer designed HyperGlide shift ramps and tooth profiling for faster and more precise shifts. Chrome plated steel cogs for increased durability. Features: Must use 9-speed chain Reduced cog spacing: 9-speed is same overall width as 8-speed Aluminum carrier reduces weight and increases rigidity

Shimano Ultegra CS-6500 9-speed Cassette-11/23-No-Colr