The workhorse of X-Range gearing. 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—at least five one-tooth jumps—while still offering a wider range
• 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
• All Zipp wheels starting from 2015 are XDR ready