SRAM XX1 Eagle AXS Crank Arm Assembly - 170mm, 8-Bolt Direct Mount, DUB Spindle Interface, GrayThe SRAM XX1 Eagle DUB crank arm assembly offers simplicity, compatibility and durability in a Carbon Tuned package. DUB technology simplifies the relationship of the spindle to the bottom bracket 8 bolt crank interface is compatible with Quarq Dzero XX1 Eagle power meter spider Not compatible with SRAM's 3 bolt direct mount interface Spider and chainrings sold separately Item Specifications BB Included No Chainring BCD Direct Mount SRAM Color Natural