Quality and durability combine in the sram x1 crankset to deliver consistent performance every time out featuring srams x sync tooth profile the x1 crankset is engineered for complete chain control each tooths thickness is cnc machined to work seamlessly with the chains inner and outer links x sync sram x sync 1x chain rings provide the highest level of performance and durability the sram x sync tall square teeth edges engage the chain earlier than traditional triangle shaped teeth