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The revolutionary machined design of the SRAM XG-999 9 Speed Cassette uses the same gruelling manufacturing techniques that produced the PowerDome road cassette. With X-Dome, eight of the cogs are CNC-machined together…
The revolutionary machined design of the SRAM XG-999 9 Speed Cassette uses the same gruelling 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 and incredibly lightweight, precise and strong cassette. The process takes 9 hours per cassette! The aluminium large cog can be replaced as needed. You have never seen a cassette that looks like this. The open design aids in mud clearance, giving you cleaner shifting performance and longer component life.
The four most innovative brands in cycling have come together behind one singular goal: to craft the most advanced Cross Country group ever. XX was a project that covered two years and thousands of hours, spanning 6 countries on three continents: It took the product and design expertise of SRAM shifting, Avid breaking, RockShox suspension and Truvativ engineering working united as one to create the lightest, most technically advanced group conceivable. This is XX.
CNC-lathed 4130 chromoly steel
- Large Cog Material:
- Lock-Ring Material:
X-Glide shifting, X-Dome design
A buying guide that offers general advice on drivetrains
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