COMPONENTS: Shimano Ultegra FD-6600 Front Derailleur

* Wide link design
20% increased rigidity
* Pivot locations for less cage deflection
Pivot location at cage was moved to point of maximum force to reduce cage deflection.
* Narrower chain cage,
Narrower chain cage to accommodate 10-speed chain.
* SG-X chainrings compatibility
* Light action spring
* DUAL SIS front index shifting
* Capacity : 22T (FD-6603)
* Weight : 113g (FD-6603-F), 127g (FD-6603-B)

Rear Compatibility 10-speed
Top Gear Teeth 52T
Chain Stay Angle 61° - 66°
Dual SIS Yes
Outer Link aluminum/clear coated
Inner Link aluminum/clear coated
Link Bushing lower A-pin
Weight B- 127gr / F- 113gr
Replaceable Chain Cage No
Capacity 22T (triple use)
O-ring Seals No
Spring Cover Yes
Mounting B=band/F=Brazed-on
Applicable Chainline 45mm
Compatible Adapter SM-AD11 (31.8mm) B- no / F- yes
Compatible Adapter SM-AD15 (34.9mm) B- no / F- yes
Band Diameter B- 28,6/31,8/34,9
Band/Brazed-On Clamp aluminum/clear coated
Chain Guide steel/pearl bright finish