Cassette technology optimised for MTB. More reliable. More durable. Better performing, thanks to an optimal tooth profile and shift ramp design for quick and positive index shifting. Go climb a mountain.FeaturesSRAM's cassette performance is optimised by material choice, tooth profile and shift ramp design for quick and positive index shiftingTechnologyPowerGlide II: Cassette technology optimised for offroad. More reliable. More durable. Better performing, thanks to an optimal tooth profile and shift ramp design for quick and positive index shifting. Go climb a mountain.SpecificationsSpeed (CS): 7sGearing: 12-32tCog Finish (Cassette): SilverTechnology (Cassette): PGCog Sizes: 12-32t: 12,14,16,18,21,26,32About SRAMFounded in 1987, SRAM (an acronym of the 3 founders names, Scott, Ray and Sam) is a privately owned bicycle component manufacturer located in Chicago. They're known for developing many of the inovative technologies used in bikes today including ETAP wireless electric shifting, Grip Shift, dedicated single chain ring drivetrains, narrow wide chainrings and more. Sram also own bicycle component brands Rockshox, Quarq, Zipp and Truvativ.