The new 10-52t, XG-1295 cassette gives riders more than ever before, with an unprecedented 520-percent range. For a little extra to avoid the hike-a-bike, a little more in the “spin to win” game, the XG-1295 cassette also allows stronger riders to increase their chainring size if they want. FEATURES Provides a massive 520-percent gear range for brutal steeps and avoiding hike-a-bikes. Stronger riders can increase chainring size for speed, without sacrificing climbing. SPECIFICATIONS Speed (CS): 12s Gearing: 10-52t Cog finish (Cassette): Black Technology (Cassette): XG Cog sizes: 10-52t:10,12,14,16,18,21,24,28,32,36,42,52 Driver body interface: XD