The newly designed crank arms offer an optimized balance between lightweight and efficiency. The crank, formed with hollow aluminium technology, is anodized with a beautiful gloss black anodized finish, giving it a luxurious look. The resin ribs on the back of the chainrings are SHIMANO 105’s unique structural design that achieves both thorough weight reduction and crisp shifting performance
FEATURES
| Optimal balance of stiffness, strength, weight and rotational performance |
| HOLLOWTECH II structure cuts weight yet maintains strength for better power transfer |
| Crank arm length: 172.5 |
| Gear combination: 50-34T |
| Q-factor: 148 mm |
