Shimano FC-5800 105 double chainset, HollowTech II 175 mm 50 / 34T, black

Lightweight Shimano HollowTech II 105 11-speed chainset - Black

Double chainring: 50/34 teeth

Innovative HollowTech forged and anodised aluminium crank arms utilise a hollow design that minimises flex and keeps the weight low

The chainring teeth have been developed to work in conjunction with HG-X 11-speed chains for increased contact to provide greater efficiency and improved power transfer

HollowTech II allows the bottom bracket bearings to be spaced wider apart, enabling the use of larger bearings and an increased axle diameter

Can be used with Shimano external or press-fit bottom brackets

The system allows for easier installation, adjustment, and maintenance

Lightweight anodised SG-X aluminium chainrings for smooth and precise shifting