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10 speed Super Narrow HyperGlide compatible cassette (compatible with older Ultegra-6600 10-speed systems)
Small-stepped gearing also for Saint M820 DH use
Single, 6-arm aluminum carrier (3 largest cogs) reduces weight and increases stiffness
Nickel plated steel cogs for increased durability with an aluminum lockring
Freehub Compatibility: Shimano HG
11-25T