Shimano 105 FD-5700 Double Front Derailleur Braze-OnShimano 105 FD-5700 Front Derailleur. The new 105 front derailleur leverages the wide inner link design introduced at the Dura-Ace lever to assertively move the chain. Combined with the improved chain guide shape, silky smooth and seamless shifts can be made even under the heaviest of loads689228423886