The Sram XG 1099 Cassette features revolutionary machined design. The XX Cassette uses the same manufacturing techniques that produced the PowerDome 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. It's a process that takes nine hours per cassette! You have never seen a cassette that looks like this. The open design aids in mud clearance, giving you cleaner shifting per-formance and longer component life.
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