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Shimano BB-UN300 BSA Bottom Bracket, 73 x 118mm, suitable for frames with English thread (BC 1.37 x 24T). Durable with sealed bearings for strength and stability with low friction and maximum power transfer. Square type compatible for corresponding cranksets. Ideal for MTB, city, trekking, and road use.
Specifications are collected from official manufacturer websites. Please verify the specifications before proceeding with your final purchase. If you notice any problem you can report it here.