Our toughest crank yet - Substance XL, a single bolt design 2.5pc crank with hefty 24mm XL spindle and an all new flush boss design eliminating sharp edges around the ankles.
Features:
- Material: Heat treated 4130 chromo
- Length: 165mm / 170mm / 175mm
- Spindle diameter: 24mm
- Weight: 1.90lbs