Xx1 boost single chainset gxp 11 speed developed for maximum chain control each tooths thickness is precisely cnc machined to support the chains inner and outer links perfectly eight available x sync direct mount chainrings 26 28 30 32 34 36 38 40 let you tune your gear range to match your terrain wheel size and riding style cnc machined 7075 two tone anodized x sync chainringan integral component of the sram 1x drivetrain x sync tall square tooth design provides maximum chain contro