Promax HF-3 Hollow Hot Forged Crankset - 172.5mm, 2-PC, Direct Mount SRAM 3-Bolt, 30mm Spindle, Black

$220.68 Regular price $299.99
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by Promax
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HF-3 cranks are Promax’s top-of-the-line aluminum crank offering. Hollow-forged from 6061-T6 aluminum, both crank arms are hollow so they are super stiff, yet lightweight. The crank arms spin on a beefy 30mm spindle permanently fitted into the drive-side arm. These cranks offer direct-mount sprocket compatibility for additional weight savings, or run them with the included 104 BCD spider adapter.

  • CNC machined 6061-T6 aluminum crank arms are lightweight, strong, and stiff
  • Designed and optimized for chainrings and spiders with SRAM's 3-Bolt mount style
  • Includes 4-bolt, 104 BCD spider/adapter (Not compatible with CK-1 crank spider/adapter)
  • 30mm spindle provides increased stiffness and efficient power transfer
  • Pedal washers included and required
  • Bottom bracket sold separately
  • MPN: CK21-030HF172-BK
  • UPC: 657993341469
  • ColorBlack
    RingsNot Included
    Number of ChainringsConfigurable Spider
    Crankset Style2-Piece
    Crank Length (mm)172.5
    Crank Intended UseBMX
    Drivetrain SpeedsSingle Speed 3/32"
    Pedal Spindle9/16"
    BB IncludedNo
    Crank Arm MaterialAluminum
    Spindle Interface TypeRaceFace/Easton CINCH
    Chainring BCD104
    Chainring BCDDirect Mount SRAM
    Chainrings IncludedNo
    Defined ColorBlack
    SKU: CKST2738