SRAM Force CassetteDesigned for the next generation of drivetrainsand the next generation of riders. The SRAM Force XG 1270 cassette is optimized for electronic shifting and features our X Range gearing technology. Smooth, precise shifts, from 10T on up. Features at least five one tooth jumps for a smoother gear progression 10 tooth start helps provide a wider gearing range Designed to work with an XDR driver body MINI CLUSTER construction reduces weight and increases