OSAKA, Japan – Shimano’s Dura-Ace flagship groupset is now available with an 11-speed cassette. That’s not the only improvement, as Shimano implemented leading edge design, materials and construction to reduce weight, to improve stiffness and to enhance rider’s control.
The redesigned shift levers and polymer coated cables for the mechanical Dura-Ace version give shorter lever stroke and lower shifting effort for easier, faster shifts. The electronic Dura-Ace Di2 shifters have improved ergonomics and feedback for easier and faster shifting. The redesigned compact lever hoods provide more comfort and control.
To improve the power delivery four-arm crankset got an asymmetric design while the new PTFE coated chain makes him more reliable under any condition.
The installation of the Dura-Ace Di2 has been simplified with the single-wire connections while the battery is even more compact and has more internal mounting options.
The complete group weights less than before. The total weight of the mechanical Dura-Ace is 1978 grams and the total weight of Dura-Ace Di2 is 1957 grams (both excluding wiring and cables).
The mechanical Dura-Ace 9000 will be available in the market next September and Dura-Ace Di2 9070 in November.