Shimano's Dura-Ace 11-speed Cassette is comprised of two aluminum cog carriers, 5 titanium and 6 steel cogs (from largest to smallest respectively). This makes for a super-light and stiff cassette for perfect shifting so you can dance up the climbs as easily and efficiently as your chain climbs up and down these cogs.
|11 – 23T||689228402478||ICS900011123||15311|
|11 – 25T||689228402447||ICS900011125||2544|
|11 – 28T||689228402454||ICS900011128||2546|
|12 – 28T||689228402430||ICS900011228||9889|