The Shimano Dura-Ace group features the highest quality road bike components from Shimano (followed by the Shimano Ultegra
group).In addition there's the Dura-Ace Di2
group, an electric version of the Dura-Ace group.
The introduction of the Dura-Ace group
in 1973 was Shimano's attempt to break into the market for professional cycling components.In the beginning the groups where clearly influenced by Campagnolo
while in the later 1980s own innovations were introduced.
The Shimano Dura-Ace
group consists of the lightest, most precise and ergonomic road bike parts
offered by Shimano
.The Dura-Ace 7900 series not only offers finest mechanical performance, it is also the base of the electric Dura-Ace Di2.
The Di2 group is a an advanced version of the Shimanos Dura-Ace
components.The shifting action works electric, without the typical cables. The rear derailleur
and the front derailleur
are powered by a battery.
This makes the newest Dura-Ace generation an even more attractive choice compared to its direct competitor theCampagnolo Record