sram 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.Things to rememberupdated design for smoother and faster shiftingmore gradual gear progression between cogs—at least five one-tooth jumps—while still offering a wider range10-tooth start helps provide a wider gearing rangedesigned to work with an xdr™ driver bodyone-piece machined steel x-dome™ design for weight savingsall zipp wheels starting from 2012 are xdr™ readySpecifications:Speed (cs):12sGearing:10-26t, 10-28t, 10-33tCog finish (cassette): silverTechnology (cassette):xgCog sizes: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