The Profile Retro American bottom bracket is the original style American BB cup and bearing set for Profile Racing 3-piece race style cranks. It suits frames with an American bottom bracket shell and a 19mm axle, which makes it the pick for a vintage restoration.
The set comes with flat cups, sealed bearings, a tube spacer and aluminium spacer washers, in silver or black. Weight is 241g. Due to Profile's anodising process, colours can be slightly mismatched.
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