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BB-UN300 Square Type Bottom Bracket

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  • Detail

    The Shimano BB-UN300 Bottom Bracket is a?quality square type bottom bracket for your standard chainset. Get?improved durability?and a smooth ride.

    • Cartridge bearing square bottom bracket
    • MTB standard structure
    • Better chain line stability with chain line stabilizer
    • Tourney A070 Series
    • Shimano high quality/performance
    • Adapter material: Aluminum
    • Bottom Bracket Shell I.D.: 1.37
    • Threaded BB shell width: 68mm
    • BB/Frame Interface: English
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