Shimano Ultegra offers reduced spring tension and redesigned inner and outer plate, creating smooth effortless shifting every time.
- Wide inner link increases rigidity
- 10% less spring tension than FD-6600 for effortless shifting
- Improved chain guide shape
- Trim function in small and big ring
- Published weight - 89g (brazed on)
- Designed for double chainring - compact or standard
- Bottom Pull Design