Shimano CS-R8101 Cassette Ultegra 12-Speed Warmers the Flatmount brake made from

the Flatmount brake made from a single

letting you focus on performance instead of distractions

the 4-way stretch gives you extra freedom of movement

✅ Planet friendly

Shimano CS-R8101 Cassette Ultegra 12-Speed Warmers the Flatmount brake made fromProduct Description Shimano Ultegra CS R8101 Cassette Shimano 105 has always offered great value for money, and this Shimano Ultegra CS R8101 12 speed cassette is no different. The Ultegra groups shift smoothly thanks to Shimano's Hyperglide technology. This technology comes from mountain biking and ensures that shifting is smoother than ever. Small bites from the teeth of the cassette and ground off parts ensure a smooth transition. Even when