Shimano Ultegra Cs-R8100 boxes the Hyperglide+ boxes have revolutionized the gearbox in off-road vehicle with a perfect fluidity of change and climb. The time has come for technological changes for road cycling. Even during the maximum uphill efforts or competing with a friend, it is no longer necessary to reduce the pressure on the pedals to change gears. In any march, the Ultegra R8150 transmissions maximize efficiency thanks to larger pignons and maintain compatibility with the bodies of the existing Hyperglide rear hubs. All this passing to 12 -speed and without increasing the weight, the Ultegra CS R8100 boxes are the new frontier for street bikes.
- The refined progressiveness 12 steps maximizes efficiency and performance in acceleration for all
- situations in the race.
- Change faster and more fluid relationships even with maximum pedaling force
- Compatible with the new 12V rear hub body and 11V road
- Speeds: 12-Speed / Road.
- Combination: 11-12-14-15-17-21-24-27-34D-11-13-14-15-17-19-21-27-30D.
- Pignoni number: 12.
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