The backbone of the X-Range™ concept, the SRAM RED® XG-1290 cassette, promises smooth, rapid progression across an even wider range of gears. It has been specifically designed for our wireless electronic drivetrain and is as lightweight as possible due to its one-piece construction.

Details:
Compatible with 1x12 and 2x12 gearing. New design for smoother and faster gear changes. More progressive cog spacing - at least five individual tooth jumps - while maintaining a greater range of development. The 10-tooth start allows for a wider range of gear ratios.

Designed for use with an XDR™ freehub body. One-piece X-Dome™ design made from machined steel for weight savings. All Zipp wheels from 2012 onwards are compatible with an XDR™ freehub body.

Ranges: 10-26t: 10, 11, 12, 13, 14, 15, 16, 17, 19, 21, 23, 26; 10-28t: 10, 11, 12, 13, 14, 15, 16, 17, 19, 21, 24, 28; 10-33t: 10, 11, 12, 13, 14, 15, 17, 19, 21, 24, 28, 33.