How do I know what size BB I would need to buy if I were to upgrade it if it goes out again.
Ask the shop what the spindle length is. That's a triple, so I'm guessing it's a 113mm BB spindle, but that's only a guess.
If you need to replace it again, go with a Shimano UN-54. They're about $25. I beat the snot out of my bike and I still get 2 years of life (about 9000 miles) from those.
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"I feel like my world was classier before I found cyclocross."
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