HF-2 cranks are Promax's top-of-the-line 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 24-millimeter spindle permanently fitted into the drive-side arm.
- 104mm BCD
 - Bottom bracket sold separately
 - Chainline: 43
 - Laser-etched graphics
 - Pedal washers included
 - Q-Factor: 167
 - Will not fit English x 73mm bottom bracket shells