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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 durability and stability with low friction and maximum power transfer.
See full descriptionShimano BB-UN300 BSA Bottom Bracket, 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. Ideal for mtb, city, trekking, and road use.
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