SRAM Rival AXS D1 DUB CranksetSRAM Rival AXS D1 DUB Crankset Designed to handle whatever you can throw at it. Polished aluminium crankarms in a wide range of lengths and the DUB bottom bracket system mean the Rival crankset will keep spinning, no matter what. A tight and consistent 13 tooth gap between chainrings makes for accurate and dependable shifting. X Range Gearing: Todays drop bar bikes are faster and more capable. Riders want a bike with the wide range gearing to match