Shimano Dura Ace CS-R9100

Rider tuned gearing Wide range gear combinations: 11-28T, 12-28T and all-new 11-30T Tight range gear combinations: 11-25T, 12-25T Lightweight Carbon fiber polymer reinforced & Alloy spider arms, 5 titanium sprockets Refer to Documents and links to find the right product Attributes Cassette Spider Mat. Carbon/Aluminum Cassette Technology Hyperglide Cog Material Steel/Titanium Finish Nickel plated Speed 11