Back in the days before splined Shimano Bottom Brackets square taper was pretty much your best choice for road and MTB. I'm sure many have never heard of a Shimano UN-90. The UN-90 was the Durace/XTR of Square Taper BB. Still the best sealed Bottom Bracket ever made and considered almost a lifetime investments on a road bike. Well my fixie has been creaking and it was getting worse. No, it couldn't be I thought. I repacked the wheel bearings but it only got worse. So finally I pulled it off and no, no; yes, it was trashed. I checked the WEB, but no good; UN-90's have gone the way of Bontrager frames and WTB dirt drops. Okay, okay, I know there are lots of good BB out there and I ended up with a Race Face Taperlock, and it's silly, but it will be missed.
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