I've had two different bike shops get me the wrong brake mount. I know that I have a 74 mm post mount on my fork. I know that I have 74 mm calipers. I know that I'm using a 180 mm rotor. Found this picture to show the second bike shop and it still did not help. This is the only thing stopping me from riding my brand-new bike for the last three weeks.
Looking to order this from Universal cycles
Shimano Disc Brake Adapters
180mm / 74mm / Front / 74mm Post / ISMMAF180PPA
Item #: 18669-73890
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Thread: 180mm with XT Caliper on Boxxer