Thread: Need to replace my Shimano BB-UN53 as the square tapper has rounded off
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Old 09-06-17 | 08:28 AM
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Iride01
Facts just confuse people
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From: Mississippi

Bikes: Tarmac Disc Comp Di2 - 2020

The crank arms are what's rounded off, correct? BB shouldn't be damaged.

Left, right or both? If the left arm only, that should be a cheap fix. Just buy the left crank arm that matches the right or doesn't match if you want to be Punky Brewster.
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