Shimano Dura-Ace CS-R9100 Cassette 11-Speed Size:11-25 and technologies that you won't

and technologies that you won't find anywhere else

the new carbon plate is 20g lighter than the S-Works 7

and blood flow loss

With radiator fin

System weight limit: 275 lbs / 125 kg

Shimano Dura-Ace CS-R9100 Cassette 11-Speed Size:11-25 and technologies that you won'tDURA ACE 11 Speed Road Cassette Sprocket CS R9100 DURA ACE 11 Speed HG EV Road Cassette Sprocket Using a carbon fibre and alloy spider and five titanium sprockets, the DURA ACE R9100 cassette provides accurate shifting and light weight to the most discerning road cyclists on the planet. Features Rider tuned gearing Lightweight CFRP & Alloy spider arm, 5 titanium sprockets