SRAM XX1 Eagle DUB Crankset Speed: 11/12 Spindle: 28.99mm BCD: Direct Mount 34 DUB 170mm Cannondale AI BlackSRAM XX1 Eagle Crankset 170mm 12 Speed 34t Direct Mount Cannondale Ai DUB Spindle Interface Gray C2. The XX1 Eagle crankset features a special hollow internal architecture combined with SRAMs Carbon Tuned technology to provide extreme stiffness and light weight. An X SYNC 2 chainring offers significantly quieter performance with better mud clearing and extraordinary durability. As a part of the SRAM Eagle ecosystem this crankset was developed for a