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Promax
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
In Stock — Ships in 4-9 Days
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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 |
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$299.99
In Stock — Ships in 4-9 Days