Ultegra CS-R8100 Cassette Color:Silver which means it fits a

which means it fits a huge range of inseam lengths (30-51 cm [12-20 in

strong and quiet

Carbonic lenses offer impact resistance and clear optics

and eliminates the dreaded belay-loop-shift when the loop-seam catches while dogging a route

Fit / Integration

Ultegra CS-R8100 Cassette Color:Silver which means it fits aShimano Ultegra CS R8100 Cassette 12 Speed, 11 30t 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 the