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

MPN: CK21-030HF172-BK · UPC: 657993341469

$299.99

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🏪 Free pickup: 26 Essex St (Rear), Andover MA · 978-270-4895

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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

Rings	Not Included
Number of Chainrings	Configurable Spider
Drivetrain Speeds	Single Speed 3/32"
Chainring BCD	Direct Mount SRAM
Chainrings Included	No
Color	Black
Crankset Style	2-Piece
Crank Length (mm)	172.5
Crank Intended Use	BMX
Pedal Spindle	9/16"
BB Included	No
Crank Arm Material	Aluminum
Spindle Interface Type	RaceFace/Easton CINCH
Defined Color	Black