Description
SHIMANO ULTEGRA 12-speed HYPERGLIDE+ Road Cassette Sprocket
The 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.