It's rugged, good looking and most importantly, probably the best-performing rear derailleur Shimano has ever created. The 11-speed Dura-Ace rear derailleur features a lighter, more compact design than previous iterations and is paired with low-friction polymer-coated cables to deliver precise shifts with a remarkably balanced effort across the gear range.
Fast, accurate gear changes with even shifting effort throughout the entire range
New low-friction, polymer-coated cables for lighter operation
Sealed pulley bearings minimize friction for smooth performance
Precise, accurate gear changes up and down the cassette