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Emyr
Chak
i currently have a 10spd disc brake wheel with a hope hub. i'd be quite happy to rebuild using that hub if i can stick and 11-34 11speed cassette on...
https://www.bikerumor.com/2017/06/07/shimano-ultegra-r8000-picks-mechanical-di2-disc-brake-dura-ace-tech/
"11 speed cassettes for the new group are for the most part unchanged in six standard offerings: 11-25, 11-28, 11-30, 11-32, 12-25 & 14-28. But a new wider range 11-34 HG800 cassette is also being made available for those looking for proper gravel-ing gearing. The 11-34 is actually designed to fit on the narrower freehub body of a mountain bike hub, so it is able to do double duty with an included spacer for 11-speed road hubs as well."
https://www.cxmagazine.com/shimano-ultegra-r8000-r8070-di2-mechanical-disc-hydraulic-first-look-cyclocross-gravel
More gear options, while old wheels are thrown an 11-speed lifeline: Shimano adds a new Ultegra and Deore XT-level wider range 11-34t HG800 cassette, which adds a 2-tooth bigger low gear. HG800? Yes, it’s confusing, as Ultegra cassettes are R8000 while Deore XT are M8000, while Tiagra is HG500, but them’s the names.Two teeth alone might not sound like big news, but for anyone with older “10-speed” wheels, this is bigger-than-two-teeth news. The new 11-34t cassette means you can grab your old 10/9/8-speed road or mountain bike wheels and use them on your 11-speed drivetrain without a massive 11-40t, 11-42 or 11-46t cassette (and mountain bike rear derailleur) or adaptor. It’s also an interesting option to turn old 10-speed freehub wheels into viable options for 1x drivetrains, even with SRAM components.