Like the range-topping K-Force Light, the SL-K Light uses state of the art manufacturing processes to achieve light, stiff hollow carbon fiber arms. The whole chainset weighs a remarkable 594g. Aluminium inserts for the pedal threads ensure durability in this highly stressed area. The SL-K Light uses a standard five-bolt chainring pattern. The 53/39 aluminium chainrings have a hard wearing, good looking anodised finish.The crank arms are topped off with a unidirectional (UD) carbon finish and bold graphics.