Shimano's 5700 105 group offers many of the same great features that have been integrated into their Dura-Ace and Ultegra groups. One such feature present in the 105 5700 front derailleurs is a wider inner link that stiffens the derailleur linkage for crisper shifting and longer lasting pivots. Get a taste of the top technology present in Shimano's Dura-Ace and Ultegra groups at a fraction of the cost!