Promax HF-3 Hollow Hot Forged Crankset - 175mm 2-PC Direct Mount SRAM 3-Bolt 30mm Spindle Black. HF-3 cranks are Promaxs top-of-the-line aluminum crank offering. Hollow-forged from 6061-T6 aluminum both crank arms are hollow so they are super stiff yet lig
Promax HF-3 Hollow Hot Forged Crankset – 175mm 2-PC Direct Mount SRAM 3-Bolt 30mm Spindle Black. HF-3 cranks are Promaxs 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.
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