The SRAM Rival XG-1250 Cassette offers smooth, precise shifting in ranges that cover road, gravel and everything in between. SRAM brings their premier 12-speed drivetrain features such as a wide range, X-Range gearing technology, and a 10-tooth start to the Rival component group.-X-Range gearing gives you more range and a smoother gear progression, so youre always in the right gear-Nickel chrome plating for quiet and durability-FULL PIN construction for durability and light weight-Designed to work with an XDR driver body