Shimano 105 FC-5800 Hollowtech-II 175mm 2-Speed 34-50T Crankset

The Shimano 105 FC-5800 11-speed chainring has 4 arms with asymmetrical holes and a bolt circle diameter of 110 mm. It can be combined in many ways and is available in silver or black. The small chainrings are made of aluminium, the large ones of an aluminium-plastic composite.