I show how to replace the bottom bracket in a vintage bike with a sealed cartridge bottom bracket. The bike in the video is a early 90s Trek 1000 road bike.

Pros of sealed cartridge bottom brackets:
They are they are sealed. They are better protected against water, mud, dirt, etc. So they will likely last longer.
They come preadjusted from the factory.
Relatively easy to replace.
Easier to buy than new cup/cone BBs.

Cons:
Not meant to be overhauled, but instead be replaced.
Maybe a little heavier than cup and cone BBs.

Feel free to search google for more pros/cons.

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