The new SRAM X-Glide 1190 cassette is SRAM's most advanced cassette in 11-speed. It represents a significant improvement over the OG-1090 . It is super light, has an excellent power transfer feel and runs much more quietly thanks to StealthRing technology. This SRAM 11-speed cassette is compatible on all 10-speed wheels so there is no need to upgrade your rear wheel or free hub body.
StealthRing technology starts with a non-load side tooth detail that allows the side plate of the chain to engage and elastomer ring that reduces vibration and noise. As the chain transitions to the load phase the tooth shape transfers power onto the cog with a uniquely solid feel.
Inspired from the combination of OG1090 (SRAM RED) and the XG 1099 (SRAM XX) cassettes, the heat-treated high-grade tool steel features hollow construction with CNC-machined cogs and rear cut-outs for reduced weight and added stiffness. The middle cogs are machined from a single block of high grade tool steel and the largest size cog is made from aluminum alloy. All this work results in the stiffest cassette SRAM has ever built plus an incredibly low weight of only 151 grams (11-25).
Recommended chains are SRAM Red 22 chain and the SRAM PC-1170.