Shimano Ultegra CS-R8101 Cassette - 12-Speed 11-34t Silver CheckoutTitle=Stan's No Tubes Arch S1 Rear Wheel - 29 Adjustable waistband with drawcord

Adjustable waistband with drawcord

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Comfortable and aerodynamic design hides all cables

Shimano Ultegra CS-R8101 Cassette - 12-Speed 11-34t Silver CheckoutTitle=Stan's No Tubes Arch S1 Rear Wheel - 29 Adjustable waistband with drawcordShimano Ultegra CS R8101 Cassette 12 Speed 11 34t Silver. The 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