The SRAM XX1 Eagle AXS Crankset is designed using SRAM's DUB interface and Carbon Tuned lay-up technology for tough and aggressive XC riding.Carbon Tuned crank technology provides extreme stiffness and SRAM's lightest weight cranksetSRAM DUB technology simplifies the relationship of the spindle to the bottom bracket for superior compatibility and durabilityThe X-SYNC 2 chainring provides significantly quieter performance with better mud clearing and extraordinary durabilityChainring technology is designed specifically for SRAM Eagle chains and drivetrains52mm chainline for Boost spacing