The SRAM X1 1400GXP 11 speed Crank. Quality and durability combine in the SRAM X1 crankset to deliver consistent performance every time out. Featuring SRAM's X-SYNC tooth profile, the X1 crankset is engineered for complete chain control. Each tooth's thickness is CNC-machined to work seamlessly with the chain's inner and outer links. And with five available chain rings (30-32-34-36-38), you can personalize your gear range to match the way you ride. SRAM X1 1400GXP 11 speed Crank Features   CNC machined 7075, two-tone anodized X-SYNC™ chainring—an integral component of the SRAM 1x™ drivetrain X-SYNC™ tall, square tooth design provides maximum chain control Sharp, narrow tooth profile and rounded chamfer edges help manage a deflected chain Mud-clearing recesses for the inner chain links and rollers Chainring guard option Hollow forged aluminum arms with forged aluminum spider