SRAM's venerable XG 1190 cassette is back with a cosmetic face lift to match the company's updated Red branding and the new RED eTap system. Like the standard Red 22 model, the SRAM XG 1190 A2 Cassette features PowerdomeX construction and StealthRing elastomer to provide a precise and quiet shifting experience. With the latest Powerdome X construction, the middle nine cogs on the XG 1190 are machined from a single block of high grade tool steel a technique similar to that of SRAM's popular XG 1099 mountain cassette to create a hollow, inspiring piece of engineering that is both stiff and exceptionally lightweight. Excess noise is effectively dissipated, leaving you with nothing but smooth, crisp, and reliable shifting. To further reduce noise, SRAM fits an elastomer StealthRing between each cog to engage, dampen, and eliminate any excess chatter from the chain. SRAM recommends pairing the XG 1190 with its Red 22 or PC 1170 chain. The XG 1190 is compatible with SRAM Red eTap, Red, Force, and Rival components. Please note that Red eTap only supports cassettes up to 11 28t, so the 11 30 and 11 32 versions of the XG 1190 are not compatible with Red eTap rear derailleurs.