Model Number
FD-6603-GB
Series
ULTEGRA SL
Cassette Compatibility
10-speed
Top Gear Teeth
52T
Maximum Capacity
22T (triple)
Link Bushing
lower A-pin
Spring Cover
yes
Chain Stay Angle
63-66
Mounting
band
Chain Line
45mm
Band Mount
28.6/31.8/34.9mm
Band Material
aluminum/clear coated
Outer Link
aluminum/clear coated
Inner Link
aluminum/clear coated
Chain Guide
steel/pearl bright finish
Average Weight
113g (FD-6603)
Model Number
FD-6600-GB
Series
ULTEGRA SL
Cassette Compatibility
10-speed
Top Gear Teeth
50-56T
Maximum Capacity
16T
Link Bushing
lower A-pin
Spring Cover
yes
Chain Stay Angle
61-66
Mounting
band
Chain Line
43.5mm
Band Mount
28.6/31.8/34.9mm
Band Material
aluminum/clear coated
Outer Link
aluminum/clear coated
Inner Link
aluminum/clear coated
Chain Guide
steel/pearl bright finish
Average Weight
89g (FD-6600-F)
Okay will either of these work?
I don't realy get the maximum capacity rating.