Coming with the high-end aesthetic and race characteristics of its Dura-Ace and Ultegra big brothers, the new 105 series also considers that most riders will use their bikes for purposes other than competitive racing. 105 is Shimano’s first level 11-speed groupset for those who are seriously committed to road bike riding, but that definition now becomes broader with the inclusion of superior handling and adaptable control to master different riding situations. 

The 11-speed cassette sprocket comes in 4 'standard' sizes (CS-R7000, 12-25T, 11-28T, 11-30T, 11-32T) and a wider 11-34T (CS-HG700) cassette with a hub body designed to fit both road bikes (with spacer) and mountain bikes.