Gx 1400 boost single chainset gxp 11 speed the sram gx crankset delivers consistent performance every time out featuring srams x sync tooth profile the gx crankset is engineered for complete chain control each tooths thickness is cnc machined to work seamlessly with the chains inner and outer links cnc machined 7075 two tone anodized x sync chainringan integral component of the sram 1x drivetrain our open core technology oct cranks are stiffer stronger and lightweight beyond any sol