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Awesome to see this much talk around the brake mount. Under the mount are 2 keyed-in 303 Stainless inserts with internal geometries to resist debonding or rotational forces. These could be heli-coiled, but I have no idea why one would ever need to change or adjust the mounting bolts once the brake mount is installed other than to change rotor size.
This design is because the old tried and trued IS tabs are not ideal for carbon construction. IS is one of the worst ways to supply a mount in composite material and will see its time passing. Compaction, orientation, and keeping everything square and plumb there with IS is not the best option.
On top of that, the brake forces are better distributed to the frame and do not load up in a concentrated manner making the fatigue far superior to IS.
I hope this sheds some light on why we chose to use this design.
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