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people seem less keen on Shimano ultegra for unknown reason
There's more than enough love for Shimano hubs on this forum
Lots of bad comments about Novatec bearings
Novatec are not the worst offender, but when you can make sales by advertising low weight, why wouldn't you let the idiots with more money than sense have undersized bearings? Stick to the basic rather than the ultralight models and they're fine.
Shimano have big balls - 9×¼" per side in the rear hub. To get that in a conventional cartridge bearing, you'd have to go all the way up to a 6004 (8×¼") which is 20mm bore and 42mm OD
Looking for an alternative to Hope hubs which are more reasonably priced, people seem less keen on Shimano ultegra for unknown reason. Ambrosio Zenith sound well thought of (though no clue what difference difference is with Zenith Endurance). Lots of bad comments about Novatec bearings, particularly note, Wheelsmith withdrew selling after comments about failing after winter riding.