The SRAM PG 1170 Cassette provides smooth shifting across 11 gears with its semi spidered steel cogs. Ideally pairing with SRAM's Force 22 groupset, the PG 1170 cassette features a 16T cog for extra cadence control and delightfully smooth shifting when you're hovering around the middle block of the cassette. X Glide shifting technology eliminates flex between the teeth to enhance shifting smoothness, especially on downshifts. Note that SRAM recommends pairing this cassette with its PC 1170 chain for flawless shifting. Moreover, it's only compatible with 11 speed hubfreehub bodies, and it includes an anodized, laser etched aluminum lockring.