• may possibly be able to help u out... i have some dura ace 170mm crank arms. they were designed for 2 chainrings though would work fine with one (i think the only difference is that you will need a slightly longer bb spindle in order to get a perfect chainline). they are in great condition (with only a few tiny little scrathes on one of the arms). i had bought them for a friend who may not need them. if ur interested let me know and i will chase my friend up about it!

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