Elite road racers demand reliable and precise shifting, and with 10-speed compatibility and super-lightweight yet durable components, the Dura-Ace front derailleur delivers Compatible with Dura-Ace ST7900 shifters and FC-7900 / FC7950 chainsets only for optimum shifting performance Thanks to improvements in the cage design outer trim is no longer required allowing the rider to focus on racing Lightweight nickel-plated forged alloy chain cage reduces weight and increases rigidity whilst resisting abrasion from the chain Extra wide pivot link and optimised spring tension combined with the ST7900 STI lever gives a rigid, flex free shift while being smooth and light action Forged aluminium construction reduces weight without sacrificing durability Hard-wearing Dura-Ace finish Maximum capacity of 16 teeth, for use with outer rings 50-56T Weight: 67 g (braze-on