Lightweight and fit for riders of all types, the Shimano CS-R8101 Ultegra 12-Speed Cassette 11-34T is engineered for road cycling, whether partaking in time trials, a triathlon or just racing down the tarmac. With its rigid alloy sprocket carrier, the cassette is lightweight and demonstrates a better shifting performance, thanks to its improved teeth that provide a more accurate shifting experience as well as less wear-and-tear, making them easy to maintain.

Features: 

• Lightweight 12-speed HG+ cassette 
• Rigid alloy sprocket carrier for reduced weight and better shifting performance
• Hyperglide+ sprockets have been designed to reduce weight with improved teeth shaping, providing more accurate shifting and less wear
• Wide gear range to meet the demands of all types of rider
• For use with 12-speed chains
• Discipline: road / time trial / triathlon