Shimano FC R510 crank arm

[fraz101]

Been looking at Power meter crank arm. (Left)

I have the above crank set on my bike, is it hollowtech 2 and will any hollowtech 2 arm fit my crank? ie R7000 R5800 105 Ultegra Dura ace so long as same length (172.5mm)

I can’t find a definitive answer anywhere.

I have checked the shimano compatibility guide but still unsure

 

[cyberknight]

yup is the simple answer
mate lent my a ultegra left crank power meter cranks fitted on the my tiagra with no issues when i was zwifting post op
some companies will even fit one onto existing cranks you own