Originally Posted by
shelbyfv
Shimano specs are 51t for both min and max large cog, FWIW.
there are 45T for SLX, XT and XTR
i am not worrying about the B screw, i think i can forgive a bit sluggish on the RD side.
but i want to make sure that if the spacing between cogs are the same
if it is not the same spacing, then it is absolutely not cross compatible