Designed from a long line of dependable

directional tread design

Machined aluminum shell threads together for precise bearing alignment and frame fit

When you’re lifting a heavy bike

SHIMANO Ultegra R8101 Cassette - 12-Speed - 11-34t salsapromo Designed from a long lineThe uninterrupted shifting experience of the Shimano Ultegra CS 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. Shimano HYPERGLIDE+ technology is integrated to provide seamless shifts both up and down the gear range. Refined 12 step gear combination provides