Upgrade your ride with some quality shifting. This rear derailleur is made with extreme attention to detail to help deliver that smooth, precise shifting we've all come to expect from Shimano. The Ultegra rear derailleur is built with the same functionality as the Dura-Ace model, making it an excellent option if you don't mind the extra 23 grams.
Wider shift plates add stiffness to provide better shifting under load
Composite plastic pulley cage improves durability
Compatible with up to a 28T rear cog for super low climbing gears
Limit screws are easier to reach for more convenient maintenance