Shimano Ultegra CS-R8101 Cassette

Yes, the CS-R8101 is designed to be backwards compatible with standard Shimano 11-speed road freehub bodies, making it a great option if you are upgrading your drivetrain without replacing your wheels.

HYPERGLIDE+ allows for smoother, faster shifting even when you are putting significant power through the pedals. It essentially guides the chain up and down the cassette more efficiently, reducing the hesitation or clunking often felt during high-torque gear changes.

This cassette is specifically engineered for Shimano's 12-speed road ecosystem. It works seamlessly with the latest Ultegra and Dura-Ace 12-speed components.

The 11-34T range offers a wider gear ratio than traditional race cassettes, giving you a lower 'granny gear' for easier climbing on steep gradients. It provides a versatile balance, ensuring you have enough top-end speed for flats while still having the range to spin comfortably on climbs.

Yes, you should pair this with a Shimano 12-speed road chain (such as the CN-M8100 or CN-M9100) to ensure the HYPERGLIDE+ shifting technology functions as intended.