Interesting question to which I don't have the answer. I'm considering doing the same thing. My research tells me it's the chainrings that are "optimized" for the Yaw technology- not the cranks themselves. It may require changing the outer ring- dunno. In my case I'll be changing the rings anyway (46-36). Which prompts the question- why can't one buy the crank and spindle without chainrings? Them chainrings are spendy! Before I take the plunge I'll be calling SRAM. If you want to try it first I'll be interested in your result.