The crank is the very center of our X-Range gearing philosophy. 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. Previously only available on RED, our integrated chainrings are light, stiff, and incredibly durable. The black finish mated to dazzling glossy carbon arms will elevate any bike.SRAM Force AXS Groupset ReviewKey Features:Unique chainring shape results in a lighter weight, stiffer, more durable crankset X-Range gearing technology gives you more range and a smoother gear progression, so youre always in the right gear Crisp and accurate front shifts Carbon fiber crankarms for light weight and stiffness DUB bottom bracket adds durability and simplicity 50/37T, 48/35T and 46/33T chainring combos available Can be upgraded to a power meter Specifications:Speeds: 12 BB Compatibility: All SRAM Road DUB BBs Chainring Size: 48/35T Crank arm length: 165mm, 167.5mm, 170mm,