Shimano Ultegra 6700 10 Speed Cassette 11-25.
Lightweight 10-speed cassette with rigid alloy sprocket carrier for reduced weight and better shifting performance, even under the most demanding gear changes
Hyperglide sprockets have been designed to reduce weight with improve teeth shaping providing accurate shifting and reduced wear
Wide gear range to meet the demands of all types of rider
Weight 208 grams (11-23 teeth)