Shimano Dura-Ace CS-R9100 11 Speed Cassette Size:11-28 Semi-structural but removable on the

Semi-structural but removable on the rim-side:

Pair a high strength forged aluminium lever with a semi-rigid Nylon Pad on the rim side of the lever only

SILCA valve stem extenders for tubular tires and tubes with removable valve core

and shift mode switching

easiest install in the world

Shimano Dura-Ace CS-R9100 11 Speed Cassette Size:11-28 Semi-structural but removable on theUsing a carbon fiber and alloy spider and five titanium sprockets, the Shimano Dura Ace CS R9100 11 Speed Cassette provides accurate shifting and light weight to the most discerning road cyclists. Specifications CFRP & alloy spider arm 5 titanium sprockets Rider tuned gearing Lightweight Gear Ratios 11 28: 11 12 13 14 15 17 19 21 23 25 28 11 30: 11 12 13 14 15 17 19 21 24 27 30 Mfr Claimed Weight 193g (11 28T) 211g (11 30T) Shop the flagship Shimano