The revolutionary machined design of the Sram 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. The open design aids in mud clearance, giving you cleaner shifting performance and longer component life.
- Cog structure has lots of spaces for mud to flow so it won't pack up
- X-Glide shifting, X-Dome design
- Aluminum large cog can be replaced as needed
- Recommended chains are the Sram PC-1090 and Sram PC-1090R