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I've been using a Token square taper BB for a while now, model with hollow Cro-Mo axle and crabon shell.
Weighs 220g with a 113mm axle, which is substantially less than the ~300g+ of the Shimano equivalents if that matters to you. Bearings feel great still, and the cup design precludes binding them by over-tightening.
The seals seem flimsier than Shimano ones though, so I packed the inside of each cup seal with grease prior to installation to give the seal lips a chance to stay moist. This was harder on the drive-side as the seal doesn't want to pop out without damage, so I injected a load of grease under it via a syringe.
ectoplasmosis
gbj_tester
I think you imagined it. Still listed on shimano.com, still widely available in shops. If Shimano ever stop making them, you will need to buy new cranks in order to cycle around the post-apocalyptic wasteland🙂
FWIW, the Token ones are sound (sometimes sold as Tifosi), and TH Industries make various grades under the RPM and FSA brands to compete with UN26 and UN55 for OEM sales, and they can also be found in the retail channel.