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BC73 73MM Square Bottom Bracket - 110.5MM is backordered and will ship as soon as it is back in stock.
Sealed cartridge bearings, JIS taper (fits modern cranks- not compatible with classic European cranks)
Thread: BC1.37” x 24T
Axle: Boron steel
Finish: Phosphated cups, anodized aluminum sheath
Weight: 280 grams