Sram:
overview
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.
Features
- 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 2012 are xdr ready
specifications
speed (cs) 12s
gearing 10-26t, 10-28t, 10-33t
cog finish (cassette) rainbow, silver
technology (cassette) xg
cog 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