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(TM) gearing gives you more range and a smoother gear progression so you're always in the right gearNickel chrome plating for quiet and durabilityFULL PIN construction for durability and light weightDesigned to work with an XDR(TM) driver body