Shimano Ultegra CS-R8101 Cassette 12-Speed 11-34 r8100 and confidence for trail and

and confidence for trail and enduro riding

Repels dirt

80-140mm length options

from the highly disruptive Daytime Flash mode to the long-lasting 80-hour runtime in Femto Mode

2018 Women's Epic Comp Carbon

Shimano Ultegra CS-R8101 Cassette 12-Speed 11-34 r8100 and confidence for trail andThe 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