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Amazon.com : Juscycling Bike Disc Brake Caliper PM Post Mount Adapter, Multiple Size Options (C(is-PM, F160/R140)) : Sports & Outdoors
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160 to 180 adapter, right way? Using Shimano SM-MA90 PM-PM, taller side of the adapter is on the right in the picture. Should it be swapped to the left? Brake feels and
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