Thread: Square taper → hollowtech BB?
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Old 02-01-26 | 12:21 PM
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cyccommute
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From: Denver, CO

Bikes: Some silver ones, a red one, a black and orange one, and a few titanium ones

External bottom bracket cranks have a fixed spindle length. They are made to fit 73mm bottom bracket shells. They are adjusted to fit on a 68mm bottom bracket shell by using 5mm of spacers which are arranged on the outer part of the bottom bracket bearings to provide the correct chain line.
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