Shimano Ultegra CS-R8101 / R8100 12 Speed Cassette Staff-Picks along with a visual indicator

along with a visual indicator on the LCD screen

Cold forged and heat treated for high durability and stability

Included with the HX-One Essentials Kit is the proprietary SILCA 17-4 Stainless Magnetic Adapter

Infini™ (with adapter)

Shimano Ultegra CS-R8101 / R8100 12 Speed Cassette Staff-Picks along with a visual indicatorThe uninterrupted shifting experience of the ULTEGRA R8101 12 speed cassette range lets you climb, sprint, or cruise without stopping to think about your next gear change. Larger driving cogs maximize drivetrain efficiency and create compatibility with both Shimano 11 and 12 speed FREEHUB bodies. Take your road bike performance to the next level with the Shimano Ultegra CS R8100 12 Speed Cassette. Designed for Shimanos latest generation 12 speed road