Sram Cassette Rival Xg-1250

With x-range gearing technology sram takes the performance of modern drivetrains to a new level now also available in the rival group. The system combines closely spaced chainrings with a cassette offering a wide gear range starting with a 10-tooth sprocket. - the x-range gear ratio gives you more gear range and smoother shifting so you're always in the right gear. - nickel chrome plating for smooth running and durability. - full pin construction for durability and low weight. - designed for use with an xdr driver. - available in 10-30 t and 10-36 t configurations. - gradation: 10-30t: 101112131415171921242730 10-36t: 101112131517192124283236