ultegra r8000 11 sil 1

Lightweight 11-speed hg-ev cassette with rigid alloy sprocket carrier to offer better shifting performance, even under the most demanding gear changes, as well as shaving off the grams.Features:Hyperglide ev sprockets have been designed improve teeth shaping providing accurate shifting and reduced wearHyperglide ev sprockets for a lighter cassettewide gear range to meet the demands of all types of riderFor use with 11-speed hg-ev chains