Based on the X-DOME concept of the XX1, the Sram Eagle XG-1299 12-speed cassette offers new features that create a smoother, quieter system with improved shifting performance.Features: 12-speed 10-50 teeth (10, 12, 14, 16, 18, 21, 24, 28, 32, 36, 42, 50)
Material: Identical to XX1, 11-gear set machined from CroMo steel, with 50-tooth aluminum sprocket. Bearings and ratchet mechanism stabilized by an XD hub body. Optimized shifting over the entire range. Compatible only with 12-speed drivetrain. New technologies offering greater longevity and weight savings. Weight: 355g. Technology:X-DOMEâ„¢. X-DOME technology creates a cassette that is strong, precise and incredibly light. The open structure allows mud to drain away and therefore improves shifting performance and component life. X-Glide 2 X-GLIDE 2â„¢ is the next generation of SRAM X-GLIDEâ„¢ technology optimized for the 12-speed EAGLEâ„¢ cassette. It provides fast and accurate shifting performance throughout the development range, and increases chain retention on larger sprockets. XDâ„¢ Cassette Body The XDâ„¢ is a cassette body that allows, by design, the use of a small 10-tooth sprocket and ensures an improved interface with the cassette.