Compatible with SRAM's wide range rear cassette, it enhances the widest 11-Speed drivetrain around by providing a seamless & smooth shift with every switch. Technologies: X-Glide: This optimised cassette technology, which has been custom designed & is the next generation of drivetrain shifting. It provides quick, precise, power-on shifting performance throughout the gear range, & increases chain retention on larger chainrings. X-Actuation: Developed specifically for SRAM 1x drivetrains, X-Actuation keeps shifting sharp & consistent across the entire cassette. This makes gears easy to index & provides exceptional performance.