Shimano Ultegra Front Derailleur FD-6703-B Compatibility and Specs

Shimano Ultegra Front Derailleur FD-6703-B triple band type

Ultegra has long been recognized as a solid performer and thanks to Shimano's Systems Engineering approach the 6700 series continues to deliver. Lighter, more stylish and advanced by the latest Dura-Ace technologies, new Ultegra is a beautifully balanced group with optimal performance and specifications. Its unprecedented racing DNA takes shifting and braking to another level, with a with a weight reduction of 150g versus 6600 series.

Dual SIS front index shifting
SG-X chainrings compatible
Wide outer and inner link
Optimum spring tension
10% less spring tension than FD-6600 provides featherlight down shift and smooth shifter stroke.
Smooth shifting under heavy load at each rear position
Wide inner link design
Improved chain guide shape
Cassette Compatibility 10-speed

Model Number: FD-6703-B (two models availables: S/M 28.6/31.8mm and L 34.9mm)
Series: ULTEGRA
Cassette Compatibility
Top Gear Teeth: 52T
Maximum Capacity: 22T
Chain Stay Angle: 63-66 degrees
Mounting: Band type
Chain Line: 45mm
Band Material: Aluminum/Painted
Outer Link: Aluminum/Painted
Inner Link: Aluminum/Painted
Chain Guide: Steel/Pearl Bright

Japan Retail price 5.335 (S/M) and 4.605 (L) yen (see cross rate here)

Compatible with ST-6703, ST-5703 and also with ST-7803, ST-6603, ST-6603G, ST-5603, ST-5603L, ST-R703 shifters.
Compatible with Shimano 10 speed chains: CN-7901, CN-6701, CN-5701 and also CN-5600, CN-6600, CN-7801.
Just stick with 10 speed parts (no 9 speed)
Compatible with Shimano crankset: FC-7803, FC-6703, FC-5703, FC-6603, FC-6604G

This is for road bike usage will also works for cyclo-cross / randonneur / touring, etc...