1x11 just got a whole lot more easily attainable. Quality and durability combine in the new SRAM X1 crankset to deliver consistent performance every time out. The X1 crankset features technology found on SRAM's high end XX1 and X01 groups. A narrow/wide-tooth X-Sync chainring offers complete chain control. Each tooth’s thickness is CNC-machined to work seamlessly with the chain’s inner and outer links. Aluminum cranks round out the package. All this makes the X1 crankset an incredible value.