The Shimano 105 Hollowtech II crank and bottom bracket combines race-proven hollow forging technology with the integrated crankset & bottom bracket. Weight is reduced while rigidity & power transfer is also radically increased. In addition to the Shimano Hollowtech II integrated design; the crank arms are hollow which provide amazing strength and rigidity at a light weight. Finally, SG-X chainrings enable super smooth front shifting. Special tooth profiles, pick-up spikes and ramps help make the front derailleur shifts quiet, easy and trouble free for you the rider.

- HollowTechII crankset : Optimum balance of lightweight and rigidity
- Smoother rolling : Minimal bearing interface for smoother rolling
- Hyperdrive compatible (SG-X chainrings)
- Dual SIS compatible

Please note the chainset is supplied with a bottom bracket axle but the price does not include the bottom bracket cups which need to be ordered separately.