Shimano Ultegra 12-speed CS-R8100-12 Cassette poloroid contrast and detail -- coming

contrast and detail -- coming in a range of color hues to match any style look

USB-C headset

click here

form-fitting and super comfortable

Exact GPS coordinates

Shimano Ultegra 12-speed CS-R8100-12 Cassette poloroid contrast and detail -- comingThe uninterrupted shifting experience of the ULTEGRA R8100 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. HYPERGLIDE+ cassettes revolutionized off road shifting with its seamless shifts both up and down the gear range. Now it's time for the technology to change