Parts need an upgrade? Find out everything you need to know about Shimano road groupsets... cycling
RRP: £4,281.87 with power meter; £3,631.87 without power meter
The 12-speed version of Dura-Ace was at the same time the most anticipated and most predictable product launch of 2021, and the most surprising.
Having a rear derailleur that will accommodate a 34-tooth sprocket means pro team mechanics no longer have to faff around to provide support riders and sprinters with very low gears for mountain stages. Previously, mechanics would fit long-cage Ultegra rear mechs so that riders whose job was simply to get over the mountains rather than race up them could save their legs on the climbs. Losing the wiring between shifters and derailleurs similarly makes life easier for pro team mechanics.
Shimano's engineers say they've learned their lesson from the transition from 10- to 11-speed cassettes, which left many riders with collections of wheels that didn't work with the new gearing.
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