• Four carbon carriers and six titanium cogs for reduced weight
• Nickel-plated finish for corrosion and wear resistance
• Dyna-sys 11-speed cassette with "Rhythm step" gearing for closer gear ratios and smoother shifting performance
• Fits Dyna-sys 11 and current Shimano 9/10-Speed MTB hubs
• The largest cog (40t) is positioned inboard and above the drive-side flange
• Hubs with tall drive-side flanges may not be compatible due to spoke interference
• Range: 11-40