The SRAM Carbon GX Eagle crankset delivers consistent performance every time out. Featuring SRAM&';s X-SYNC 2 tooth profile chainring, the Carbon GX crankset is engineered for complete chain control. Each tooth&';s thickness is precisely toleranced and controlled to work seamlessly with the chain&';s inner and outer links. DUB technology features a better-engineered bottom bracket and a new spindle design. Together, these allow for a more uniform approach to bottom bracket fitment, better sealing against contamination and forward and backward compatibility. Now everyone can benefit from a new measure of durability. SRAM DUB technology creates a lighter, stiffer and stronger crankset 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 Boost 52mm chainline DUB compatible bottom bracket sold separately Crank boots/covers in picture are not included Pedal Spindle: 9/16" BB Included: No Chainring BCD: Direct Mount SRAM Color: Lunar Crank Intended Use: Mountain Number of Chainrings: Chain Retaining Single Rings: 32 Drivetrain Speeds: 12 Spindle Interface Type: SRAM DUB Chainline/Hub Compatibility: 141/148 Boost Hubs