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Is BSA30 a good or a bad idea?
From a pedantic point of view, it's a terrible idea because there's no such thing as a BSA thread. Technically, it's just 386EVO with threaded cups, and exactly the same as the Zipp Vuma cranks from 15 years ago, which work fine. The bearing cartridges are BB30 (6806), so you can take your pick from generic industrial ones to full #tartmode bike company versions according to taste.
Is BSA30 a good or a bad idea? Better or worse then GXP?