Not sure if there was meant to be some washers somewhere?
It's stamped as a 160mm adaptor for front brake. My rotor is 160mm. Arrow pointing up.
I'd guess it's a manufacturing fault unless you've been really overtightening them, new calipers are cheap if you can find them though, only thing available with Madison is M6100 but somewhere might have stock of MT200 or MT410.
Wondering if the adaptor to blame. Stressing the caliper?
I'm going to order a new adaptor and caliper.
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