The SRAM RED AXS D1 DUB Crank Arm Assembly is the base for the custom crankset of your dreams for your RED AXS drivetrain. It features a spider power meter or integrated chainring compatible 8-bolt interface with premium Hollow Exogram carbon arms for excellent stiffness and low weight for unmatched power transfer. These cranks are compatible with any DUB interface and come in a wide range of 6 different lengths from 165 to 177.5mm to fit virtually any rider.