The trp hy rd pronounced high road is probably the most powerful cable actuated disc brake on the market being compatible with all standard drop bar levers this brake provides the option to switch to hydraulic discs without having to shell out for a top flight hydraulic disc compatible groupset the hy rd could also be the easiest cable actuated brake on the market to set up requiring only a 5mm allen key to make the switch from a current mechanical disc brake setup just click the video ta