New Shimano UN53 107mm bottom bracket, 73mm BSA

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niggle

Senior Member
New Shimano BB-UN53 bottom bracket with 107mm axle, for BSA threaded bottom bracket shell 73mm wide ( as found commonly on MTBs). This has been installed in a frame and fitted with cranks, but found to be too short for the purpose and removed again without ever being used. Note all metal cups on this model. £10 posted to UK address

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