Blackspire snaggletooth narrow wide chainring x01this highly efficient narrowwide chainring will grip the chain perfectly prevent chain drops and will increase confidence you have in your bikes drivetrain this version of this chainring is compatible with the sram x01 cranks that have a 94mm bc d only featuresmaterial cnc 7075 t 6compatible sram 94mm bc d x01 cranks onlythickness 5mmspeed 9 10 and 11 speedbuyblackspire componentsfrom chain reaction cycles the worlds largest onlin