SRAM FORCE D2 175x48/35 DM DUB NoBB IR-BKUnique chainring shape results in a lighter weight, stiffer, more durable crankset With tight 13 tooth gaps between chainrings paired to wide range cassettes, riders get more range while shifting less frequently and staying in the big ring longer X Range gearing technology gives you more range and a smoother gear progression, so youre always in the right gear Carbon fiber crankarms for light weight and stiffness 50 37T, 48 35T and 46 33T chainring