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  • Is it possible to fit flat mount disc brake calipers (Shimano RS805) to a frame and fork designed for post mount?

    No, because the posts are in the way of where the caliper needs to be.

  • That's what I assumed, thanks.

    Will a shimano/hope mtb hydraulic caliper work with the road levers or would I have to go for the specific road type?

  • Will a shimano/hope mtb hydraulic caliper work with the road levers

    Dunno. Piston area is the key variable, you'd need to know how big the pistons are in the various calipers. Compatibility of the seals with the brake fluid is the other stumbling block if you mix Shimano levers with other people's calipers.

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