SRAM GX Eagle Boost Crankset Fly Like a SRAMThe SRAM GX Eagle DUB crankset delivers consistent performance every time out. Featuring SRAM's DUB technology, this design simplifies the relationship of the spindle to the bottom bracket. Optimized 7000 series forged aluminum arms support the X-SYNC 2 chainring to provide complete chain control. Now everyone can benefit from a new measure of durability. Features 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 drivetrains55mm chainline | Sram | Gx Eagle Boost Crankset 175Mm 55Cl | Aluminum