Shimano Dura-Ace is the cream of road bike groupsets, with the Japanese giant applying its latest technology and most cutting-edge materials to deliver the very best in bike componentry.
Described as their "lightest, most ergonomic, and most precise groupset ever", it comes in mechanical and electronic Di2 versions, and sits above performance road groupset Ultegra in the Shimano family tree.
As such, it's a competitor to SRAM Red and Campagnolo Record; the latter's Super Record can probably be deemed hors catégorie here, being so much more expensive than its rivals.
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There are two versions available – Shimano Dura-Ace with mechanical shifting, and Dura-Ace Di2 with electronic shifting.
Shimano Dura-Ace R9100 / R9150 Di2
Shimano lifted the lid on the latest versions of its flagship Dura-Ace mechanical and electronic road groupsets in June 2016. Officially known as Dura-Ace R9100 (mechanical) or R9150 Di2 (electronic), the groups push several firsts for Shimano on the road side of things, including the options of an integrated power meter, hydraulic disc braking and the migration of Shimano’s clever synchronised shifting technology.
With this latest update, Dura-Ace will continue to be available in electronic (Di2) and mechanical options, and both will remain 11-speed. Along similar lines, Dura-Ace Di2 will not be wireless in a traditional sense, although it does feature some wireless functionality.
Shimano Dura-Ace 9000
Shimano Dura-Ace 9070 Di2
You can read more at BikeRadar.com
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