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Can anyone tell me if the XT M8000 cranks that come as standard on the XT Spec Ripmo are boost spacing or not?

I'd like to replace the current 175mm arms with 170's. Maybe XTR arms but unsure if I 'need' the boost version or not...

Thanks in advance!
 

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I'm curious to know as well.

You could always measure your current chainline and let me know what you find. If its 50.3 then it's non boost but if its 53mm it's boost according to shimano specs

Measure from centre of frame to centre of chainring
 

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Probably boost spacing, I went through this when I built up my Mojo 3.
I called Ibis, they said use boost spacing, even for 1X drivetrains. (just call them)

However, I found the non-boost XT cranks had a better centered chainline (1X), been running them for 2+ years, works great.
 
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