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Are non-drive side bottom bracket cups interchangeable between brands and between 68 and 72mm models?
Very rarely between brands, maybe sometimes between 68 and 73 but the go-to Shimano UN55 actually has 4 different BSC threaded NDS cups depending on shell width and axle length, and two more for Italian threaded 70mm shells.
gbj_tester
@ffm
Are non-drive side bottom bracket cups interchangeable between brands and between 68 and 72mm models?