Shimano ultegra 6800 11 speed road cassettean additional sprocket has given this ultegra cassette a new lease of life and is a welcome addition to those seeking wider gear ratios the hyperglide ev sprockets are designed to save weight increase durability and improve shifting accuracy thats a complete overhaul for a superior riding experience rider tuned drivetrainthe shimano ultegra 6800 11 speed road cassette offers a broad choice and supports shimanos rider tuned drivetrain concept w