General description Our premier X-Range gearing utilizes tight jumps between chainrings and a 12-speed wide range cassette starting at 10 teeth, now available for Rival. This cassette features smooth, precise shifting across a range that covers road, gravel, and everything in between. Technical specifications Speed (CS): 12s Gearing: 10-30t Cog sizes for 10-30t: 10, 11, 12, 13, 14, 15, 17, 19, 21, 24, 27, 30 Driver body interface: XDR Cog finish: Silver Technology: XG Other information Features X-Range™ gearing for more range and smoother gear progression Nickel chrome plating for quiet operation and durability FULL PIN construction for durability and lightweight design