My wife purchased an Ultegra 8020 groupset for my birthday present. Unfortunately the brake calipers do not line up with the mounts on the frame, fork is 74mm, frame is 51mm. Are there adapters so I can mount the Shimano brakes? the holes on the Shimano mounting plate are slightly closer than 74mm.

  • Are your current TRP calipers hydraulic too? – Klaster_1 Aug 27 '18 at 1:36
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    Yes but cable actuated, I ordered a pair of RS785's, that should solve the problem and I'll have a pair of flat mounts for a future frame. – Montiel 2286 Aug 28 '18 at 1:08

You might want to start by checking out this thread.

The Ultegra brakes will be flat mount. It sounds like your frame has an IS mount, and your fork has a post mount. AFAICT, there is no such thing as an adapter for flat-mount brakes on a post-mount fork, nor for flat to IS. Yay standards!

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