Will a 9 speed crank work with 10 speed groupset? Will this SLX 9 speed crank work with newer 10 speed groupsets? It looks to me that 9 and 10 speed cranks are the same. Or am I missing something? Are the spaces between the rings different?
10 is a little bit narrower, but generally a crank with 1 measure narrower chain will work pretty good.