Compatible with both Dura Ace and Ultegra. Does not need a new derailleur.
FC-R700 Compact Cranks
Compact specific technology:
Shimano Compact cranks get an additional set of sub-pins to further regulate the shifting process. This maximizes shifting performance and ensures compatibility with traditional Shimano road racing double front derailleurs despite the massive 16-tooth jump between chainrings.
Compact specific chainrings mean that you don’t need to worry about compact specific front derailleurs! Any 10-speed double front derailleur will be compatble with the FC-R700.
