Sram Red Xg-1290 E1 Cassette

The sram red cassette combines a wide gear range with finely spaced gears for efficient riding in any situation. Four cassette options including the 10-30t and 10-36t variants of the red series offer shift ramps specially designed for electronic shifting for fast and reliable gear changes. - designed for smooth and fast shifting. - gradual transition between sprocket at least five jumps of one tooth on the 10-28t 10-30t and 10-33t cassettes—while expanding the gear range. - the 10-tooth start provides a wider gear range. - the 10-30t and 10-36t options are available for the first time in red. - designed for use with an xdr driver body. - one-piece x-dome design made of machined steel for weight savings. - gradation: 10-28t: 101112131415161719212428 10-30t: 101112131415171921242730 10-33t: 101112131415171921242833 10-36t: 101112131517192124283236