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Shimano BB-UN300 BSA Bottom Bracket, suitable for frames with English threading (BC 1.37 x 24T). Durable with sealed bearings for endurance and stability with low friction and maximum power transfer.
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Shimano BB-UN300 BSA Bottom Bracket, suitable for frames with English threading (BC 1.37 x 24T). Durable with sealed bearings for endurance and stability with low friction and maximum power transfer. Ideal for mtb, city, trekking, and road use.
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