Product Condition The Dura-Ace CS-R9100 11-Speed Cassette is in Excellent condition cassette has very minor marking on teeth Size Unisex 11-28Color One ColorRetail Cost 28399Shimanos groupsets often often miss call-outs for European elegance or relentless pursuit of weight loss at all cost and innovation for innovations sake instead earning their loyal following through the incredible dependability and meticulous engineering of the Dura-Ace CS-R9100 11-Speed Cassette 9100 isnt a typo there it is in fact a newly reworked version of Dura-Ace When the brand introduces a new groupset you can be sure its actually boasting improvements you dont have to be Porte or Stannard to detect on a routine Sunday in the saddle Since Dura-Ace is the top-tier drivetrain in the Shimano road lineup you might be surprised that only the largest five cogs are titanium Thats becausethough its lightertitanium is generally more prone to wear than nickel-plated steel and the smaller cogs are more prone to wear than the larger Because of these material properties Shimano only uses titanium where the softer metal doesnt create a significant negative impactWhy We Like The Dura-Ace CS-R9100 11-Speed Cassette DWGAM7N