Designed 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.Key Features:X-Range gearing gives you more range and a smoother gear progression, so youre always in the right gearMINI CLUSTER construction reduces weight and increases durabilityDesigned to work with an XDR driver bodyAll Zipp wheels starting from 2015 are XDR readyNow includes 10-36 option for even more range (must be used with the correct Force eTap AXS rear derailleur)