Sram Red XG-1290 12-Speed Cassette
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.
Updated design for smoother and faster shifting
More 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 2012 are XDR™ ready