Needs a rethink, expensive
The concept, shape, material and the race number bush are fine, The plain hole with no bush or washer is supposed to fit between the frame and brake caliper. If so, then it scratches the frame and subjects the frame to localised stress points when retightening the brake fitting. Not a cool idea on a carbon frame. Needs a bush or larger area of metal to spread the load evenly. Come on guys, you're stamping it from metal, so a bit more metal please! It's expensive too.
- brake/frame fitting