Shimano Dura-Ace Di2 R9270 is now available with a 40% discount in the Sigma Sports Summer Sale, bringing the price down from £3,579 to £2,149 – that's a saving of £1,430.
Dura-Ace sits at the very top of the Japanese brand’s hierarchy, with the flagship groupset often specced on the best road bikes, including many pro bikes.
While it shares some design elements with Shimano’s cheaper 105 Di2 and Ultegra Di2 groupsets (also in Sigma’s Summer Sale), Dura-Ace is both the lightest and most technologically advanced groupset in the line-up.

As of writing, all crank-length and crankset options (excluding the 54/40-tooth) are available at Sigma Sports, so if you’re in the market, now is the time to get your perfect setup at a discounted price.
Crank-length options range from 165mm to 175mm, while cranksets range from 50/34-tooth to 52/36-tooth.

The version available in the Sigma Sports Summer Sale is the disc variant of the groupset, which has Shimano’s Servo Wave modulation brakes.

If you’re riding rim brakes, Fawkes Cycles has 48% off the rim-brake variant, bringing the price down from £3,479.95 to £1,799.99 – saving £1,679.96.
When BikeRadar’s Simon von Bromley reviewed Dura-Ace, he argued it was “the best of the best” and praised its “class-leading shifting performance”.