If buying a new chainset (SLX), does anyone know the best version to get – m7100 (52mm chainline, boost or non-boost) or m7120 (55mm, boost only). I can see the SLX full bike uses the m7120 crank but the GX full bike has a 52mm chainline…
Or does it make no difference? (Not done the boost thing before!) Wheels will be boost hubs.
I can see the chainline for the m7000 boost is 153mm, so the m7100 (52mm chainline) should be ok with 32t round chainring… but I’m just wondering why PX spec the 55mm chainline m7120. Is that just what they had or would it be better?
Just to answer my earlier question on page 19 (in case it helps anyone else) – an SLX M7100 crank won’t fit (not even close – would need 2 spacers on driveside to stop crank arm hitting chainstay, but then there isn’t enough spindle poking through to attach the NDS crank arm). So I’ll have to sell the M7100 crank and get hold of an M7120 (which I assume must fit as PX spec then on the SLX bikes).