Shimano Ultegra R8101 12 Speed Cassette - Silver Rope & Chalk Bags Constructed from a stretch softshell

Constructed from a stretch softshell fabric

is shaped by the same advanced aerodynamic R&D as their carbon-fibre Accelero and Mercurio wheels

Because we believe comfort in the outdoors includes an at-ease conscience

The KMC 12-speed chain is suitable for all SRAM 12-speed rear derailleurs and cassettes and impresses with perfect shifting performance

Shimano Ultegra R8101 12 Speed Cassette - Silver Rope & Chalk Bags Constructed from a stretch softshellShimano Ultegra R8101 12 Speed Cassette Silver Shimanos Ultegra R8101 12 Speed Cassette provides amazing shifting under pressure, with the Hyperglide+ design moving the chain between ratios flawlessly whenever called upon. By offering 12 sprockets, Shimano has been able to reduce the jumps between gears so that it is easier to stay in the cadence sweet spot for greater efficiency and less fatigue. The combination of steel sprockets and an alloy