Shimano Ultegra CS-R8101 12V Cassette Grey - 11-30

The Shimano Ultegra CS-R8101 12V cassette revolutionises off-road shifting with its smooth upshifts and downshifts. Now is the time for technology to change road cycling. Even during maximum efforts on a climb or racing among friends, riders no longer need to back off to make a change. In any gear, the Ultegra R8100 drivetrains maximize efficiency thanks to the larger sprockets and maintain compatibility with existing HYPERGLIDE rear hub bodies.Features:Use: RoadMaterial : aluminium, steelTechnology: Hyperglide +Switching stages: 12Graduations: 11-30 or 11-34 teethTranslation bandwidth: 273 - 309%Speeds: 12