Recommended for use with SRAMs XX 10 speed groupset. The revolutionary machined design of the XX Cassette uses the same grueling manufacturing techniques that produced the PowerDome road cassette. With X-Dome, eight of the cogs are CNC machined together out of a single block of billet steel, creating an incredibly lightweight, precise, and strong cassette. Its a process that takes nine hours per cassette! The aluminium large cog can be replaced as needed. The open design gives mud clearance, providing a cleaner shifting performance and a longer component life. The SRAM XX cassette comes with ten cogs. Nine are made of 4130 chromoly steel. The tenth (largest) is made from 7075-T6 aluminum and is individually replaceable. The lock ring is made from 7075-T6 aluminum as well. The shifting cutouts and ramps are X-glide. SRAM recommends using their 1090 or 1090R chain with this cassette, though any 10-speed chain is compatible. Claimed weight of the SRAM XX Cassette in the 1132 ratio is 185g, in 1136 ratio is 208g. The 1132 includes: 11,12,14,16,18,20,22,25,28,32.
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