CASSETTE SRAM XG-1190 11-28 11S.

Hollow steel dome makes for the stiffest gear cluster ever at the lightest weight. Heat-treated, high-grade tool steel provide superlative durability and a beautiful finish. StealthRing elastomers and advanced tooth profiles eliminate vibration and noise for a smooth, silent ride. Aluminum cog: lighter, stiffer, stronger due to the design, material and production process. Gear ratio 11-28: 11,12,13,14,15,16,17,19,22,25,28. Technology Highlight(s): Powerdome X/ X Glide Cogs/ StealthRings. Material: High Grade Tool Steel Cog Cluster, Heat Treatment Process, Heat Treated Aluminum lowest Range Cog, Elastomer Rings. Speeds: 11. Recommended Chain: SRAM RED 22 chain, SRAM PC-1170 chain. Recommended Group: SRAM RED 22