Shimano 105 5800 11 speed compact chainset
The shimano 105 fc 5800 hollowtech ii chainset ensures weight is kept to a minimum thanks to the hollow design of the forged and anodised aluminium crank arms the teeth have been designed to work specifically with hg x 11 speed chains to increase contact providing you with optimized efficiency and improved power transfer this shimano chainset allows for the use of larger bearings and increased axle diameter because the bottom bracket bearings can be spaced wider apart