The X01 Eagle crankset is designed to be tough; ready for aggressive Trail and Enduro riding. The Carbon-tuned crankset features 1x components, engineered for greater durability and performance. Carbon-tuned lay-up crank design provides extreme stiffness and light weight Included direct mount X-SYNC 2 chainring provides significantly quieter performance, with better mud clearing and durability Chainring is designed specifically for Eagle chains and drivetrains 52.0mm chainline for boost rear end spacing Pedal Spindle: 9/16" BB Included: No Chainring BCD: Direct Mount SRAM Crank Intended Use: Mountain Number of Chainrings: Chain Retaining Single Rings: 32 Spindle Interface Type: SRAM DUB Chainline/Hub Compatibility: 141/148 Boost Hubs