[Black 34.9mm]

There are two things you can count on with steel frames: they ride like butter and youll have to spend an inordinate amount of time hunting down a braze-on mount in order to attach any of todays front derailleurs to them. Shimanos Di2 derailleurs are a good case in point, but the Dura-Ace FD-R9150 Front Derailleur Adapter simplifies the hunt. Its an age-old solution to a contemporary problem. Frankly, Di2 front derailleurs are designed to be attached to carbon frames whose seat tubes have such tortured, overwrought shapes that no clamp known to human kind can tame them, so theyre all just braze-on derailleurs that mount directly to the frame. This rules out frames with traditional, round, tube-shaped tubes--unless, that is, youve got the right adapter. The FD-R9150 Adapter lets you marry the latest drivetrain technology with your favorite frameset.