The SRAM RED XG-1290 cassette progresses fluidly and quickly through a wider range of gears. It's specifically designed for wireless electronic shifting and the one-piece design offers you the best in weight savings.
-Designed for smooth and fast shifting
-Gradual gear progression between cogs
-10-tooth start helps provide a wider gearing range
-Designed to work with an XDR driver body
-One-piece machined steel X-DOME design for weight savings