USD $‎399.99

Box One M30-M Crankset

  • • Oversized Technology™ Hollow Forged Design
  • • Oversized 30mm Alloy Spindle
  • • Self-Extracting Crank Bolt System
  • • Top-Load Clamp Design
  • • 4-bolt 104 BCD Spider
  • • External BSA 30mm BB Included

    BB (Included)BSA 30mm 1.37BSA 30mm 1.37BSA 30mm 1.37
    Spindle30mm Alloy30mm Alloy30mm Alloy
    Material7075 T-6 Aluminum7075 T-6 Aluminum7075 T-6 Aluminum
    Q Factor153mm153mm153mm

    Due to the complexity of hollow-forged manufacturing, the weights may vary +/- 10%
    SKU: BX-CK14VM
    Featuring oversized hollow-forged crank arms and a massive 30-millimeter Praxis™ M-30 spindle cold-forged from 7075 aluminum and precision ground to extremely tight tolerances, Box Two™ M30-M cranks fit frames with European bottom brackets, paired with the same oversized, hollow-forged arms and 104 BCD spider with a flex-resistant ring as our Box One™ M35 cranks.

    Each crankset includes a Praxis™ M30-BSA Threaded Bottom Bracket that is compatible with all BSA European style bottom brackets. For frames with BB86 or BB30/PF30 bottom bracket shells, compatible adapters can be purchased separately from Praxis ™.

  • • Box Two Chainring
  • • Box One Chromoly Chainring Bolts
  • • Box One 7075 Alloy Chainring Bolts
  • • Box Two Oversized bottom bracket M30
  • Installation


    No. These cranks are designed to not use pedal washers. Installing pedal washers can damage the crank as the pedal will not be threaded in sufficiently.

    Yes, but you will need a BB86 conversion bottom bracket available from Praxis Cycle Works.

    The cranks are designed to specifically for 68mm wide BMX bottom bracket shells and require no spacers. Spacers may be required if your frame has a bottom bracket shell that is less than 68mm wide.

    No. A chainring can only be installed on the inside of the spider.

    No. A loose pedal will damage the crank and can cause injury. Always ensure that your pedals are tightened correctly.

  • BB86 frames require Praxis™ part 86-4001B.
  • BB30/PF30 frames require Praxis™ part 68-4001R or 68-5401R.
  • T47 frames require Praxis™ part 47-0000.
  • Do not use pedal washers when installing pedals onto these cranks. M30-M cranks were designed to be used without pedal washers.
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