[ctxcrossx]

I am building up a fat bike with a race face ride crankset. I didn't realize how many different spline interfaces there were and mistakenly purchased one from e13. Lesson learned. I'm having trouble matching up the spline interface with the appropriate chainring. Obviously a race face chainring should be compatible, but I don't see anything that matches the interface. In particular, it looks like my crank spline is keyed, but nothing matches that area. Thoughts?

 

[the-one1]

A Raceface direct mount (cinch) chain ring will fit. The chain ring isn't keyed like what you see on the crank. You can actually rotate the chain ring 360 on the crank before tightening it down.
There's a marking on the chain ring that you're supposed to line up with that key. The marking could be a printed line/dot or a machined line/dot.