I just noticed that I have 2 different size lock rings for the Shimano centerlock rotors. These where in my spare parts bin, but the rear on my current wheelset is using the smaller one and the front is using the lock ring that came with the front hub. I'm using 180mm front and 160mm rear Shimano IceTech rotors.
Can someone help me identify which one is the correct one to use?
Mtbr's 2016 Winter Biking GearReviews and Roundups
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