Theory American Bottom Bracket Cups (Red)

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Theory American Bottom Bracket Cups (Red)
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Theory American BB Cups Description:

The Theory American Bottom Bracket Cups allow you to use any sealed Mid BB (19, 22 or 24mm) in any American bottom bracket frame. If you have a frame with an American BB shell, it can be difficult upgrading your crankset or even finding a replacement BB kit. These Theory American cups should help solve your issue. Sold in pairs.

This product was added to our catalog on February 16, 2023

Verified Owner
Friday, May 26 2023 (4 months ago)
Theory American Bottom Bracket Cups (Red)
They don’t fit, I promise! Ruined both my new bearings and cups trying to press together. They’re not for you. They don’t fit by 0.7 mm, a lot!!!