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    Promax - EX-1 Bottom Bracket (BMX)

    Product Code: promax-ex-1-bottom-bracket-bmx

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    Promax - EX-1 Bottom Bracket (BMX)

    The Promax EX-1 Bottom Bracket is the perfect solution for BMX riders needing a more durable solution. Built out of cold forged and CNC machined alloy cups, the EX-1 dual labyrinth bearing covers and precision sealed bearings make this a worthy upgrade for any BMX rider. A perfect match to the Promax CF-2 and HF-2 cranks, it is also the ultimate upgrade to budget BBs that are sold with most crank sets on the market.  Designed to fit all 24mm bottom bracket spindles and frames with 68/73 x BC 1.37" bottom bracket shells, the Promax EX-1 Bottom Bracket is the ultimate upgrade to make your drivetrain more durable and faster.

    Features:

    • EX-1 External bottom brackets feature cold-forged and CNC-machined alloy cups, dual-labyrinth bearing covers and precision sealed bearings
    • They are the perfect match to Promax CF-2 and HF-2 cranks and ultimate upgrade to the budget BBs sold with most crank sets
    • Fit all 24-millimeter bottom bracket spindles and frames with 68 or 73 x BC1.37” bottom bracket shells
    • Weight: 103 grams/3.63 ounces