Shell | Bottom Bracketsfrom 20 to 22
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from 20 to 22 Bottom Brackets
Shimano UN300 Bottom Bracket with British Thread and Silver finish. Fits square taper cranks measuring 68mm or 113mm. Easy to install, provides smooth and durable performance. Suitable for various bicycle types.
Shimano BB-UN300 is a square tapered bottom bracket with a British thread and comes in silver. It measures 68 to 115 mm and fits most bikes with a standard frame.
Shimano BB-UN300 bottom bracket British thread, 68 - 127.5 mm
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