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Shimano introduces the all new 7900 series Dura-Ace. The new mechanical Dura-Ace group loses over 135g while maintaining it’s legendary durability and improving performance and ergonomics.

Since 1973, Shimano’s Dura-Ace components have been at the forefront of pro racing and pro-level technology. Dura-Ace has continued its legacy of being proven in the peloton as well as serving as a launch pad for new technologies. Index shifting (SIS), integrated brake and shift levers (STI), and hollow forged cranks (Hollowtech II) have set Shimano’s Dura-Ace as the benchmark in road bike componentry.

Features:

• Combined with a hollow outer chainring the crankset is 20% stiffer for optimal power transfer while still saving 15 grams.
• Shifting stroke for the rear derailleur has been reduced by 20% for quicker shifts and a built in reach adjuster allows for fine tuning the fit for riders with smaller hands.
• The chain uses hollow pins and weight drops by over 18 grams even with the addition of a quick connection / removal link.
• With a new carbon fiber rear pulley cage, the rear derailleur loses another 16 grams while maintaining durability and improving performance.
• The new Dura-Ace front derailleur cage eliminates the need to manually trim the front shifting. Additionally, the redesigned, more efficient wide linkage and optimized spring tension combine for reduced shifting effort.
• While other brakes ditch sensible features like a spring tension adjuster or adjustable toe, the new Dura-Ace brakes still come equipped with those features and manage to drop nearly 30 grams per pair.
• Cassette design is lighter as Shimano has developed a super lightweight and rigid aluminum cassette sprocket carrier.