Shimano FD-7970 Dura-Ace Di2 Front Derailleur Compatibility and Specifications

Shimano Dura-Ace FD-7970 Di2 Front Derailleur

The front derailleur is the “brains” of the system. The integrated ultra-compact CPU not only ensures that shifting is perfect for both the front and rear derailleurs individually, but also by monitoring the position of each, creates a front derailleur that tracks the chain and requires zero manual trim without sacrificing any shifting speed. The front derailleur logic also performs the inward shift from the big chainring in two parts to eliminate chain drop, with both actions measured in fractions of a second.

Di2 - Digital Integrated Intelligence - electronic shifting
Titanium B axle
Carbon fiber pulley cage
Programmed motion
Maximum outer: 50-56T
Chainline: 43.5mm
Published weight 124 grams
10 speed compatible
Double and Compact Compatible

Japan Retail price 47.626 yen (see cross rate here)

Compatible ONLY with Shimano following parts: ST-7970, ST-7971, RD-7970.

Compatible with Shimano crankset: FC-7900, FC-7950, FC-7800C and also * with FC-7800, FC-6600, FC-6601-G, FC-6650-S/-G, FC-5600-S/-L, FC-5650-S/-L, FC-R700, FC-R600. (*Slower shifting may occur depending of frame size)

Shimano Cassettes: CS-7900 (not 11/28), CS-7800, CS-6700 (not 11-28), CS-6600, CS-5700 (not 11-28), CS-5600.
Compatible with Shimano chains: CN-7900 and CN-7901, CN-7801, CN-6600, CN-6700, CN-5600, CN-5700.

Require to be used with Shimano; SM-BTR1, EW-7970, Double setting SM-EW79F-E (with SC-7900) or SM-EW79A-E or Time Trial setting SM-EW-79F-I (with SC-7900) or SM-EW79A-I.

Mouting Clamps available in SM-AD79L(34.9mm) and SM-AD79M(31.8mm）or SM-AD79S(28.6mm）