Sram xx1 11sp chainsetdeveloped for maximum chain control each tooths thickness is precisely cnc machined to support the chains inner and outer links perfectly x sync direct mount chainrings let you tune your gear range to match your terrain wheel size and riding style featuresarm material carbon arms with forged aluminium spiderrings cnc machined ringsweight 645g gxp bb 175mm 32 tooth ringtechnologiesx sync sram x sync 1x chainrings provide the highest level of performance and