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Create an accountBottom bracket shell for frame builders. Manufactured in Taiwan by Allotec, a foundry which makes steel frame parts using the lost wax investment casting method. Please see diagram and details spec in the manufacturer's catalog.
J340A
Racing B.B. Shell.
Tube: Ø28.6x 31.8x22.2mm
Angle: 60° x 62.72° x 7°
Wt: 312.5g
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