Our flat mount dropout assemblies allow for the use of hydraulic disc brakes on both mountain and road bikes. The rear brake sits flush to the frame and is mounted inboard on the rear triangle, with the brake caliper directly mounted on the frame or fork. This offers a cleaner and more minimalist appearance, and allows a more compact packaging of the brake caliper. The bolts thread into the bottom of the caliper, rather than threading in from the top as is the case with post mount brakes. At the chainstay the bolts no longer thread into inserts in the frame, but pass through the chainstay from the bottom. Because the bolts thread in from the bottom of the caliper, the front brake must be used with a slim adaptor.The assemblies consist of three pieces:
- Right and left frame components.
- A matching caliper mount that must be brazed or welded to the dropout by the builder. The locating features are interal, no fixture is needed for location.
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