A company called Speen make this device called the "Umlenker" which translated means the top pull. Nifty little doo-hicky gives you a clean and simple method of running a traditional bottom pull road derailleur with a top routed cable. Genius, which being manufactured and designed by a German company is not at all surprising.
|The device is just the silver bar bolted onto the top. They make a version for Sram, Campy Etc.|