Sram rival 1 chainset gxp bbthe sram rival 1 crankset delivers consistent performance every time out featuring srams x sync tooth profile the rival 1 crankset is engineered for complete chain control each tooths thickness is cnc machined to work seamlessly with the chains inner and outer links and with seven available chain rings you can personalize your gear range to match the way you ride featuresforged aluminium with detachable spiderx sync tall square tooth design provides max