The new Fontaine 170SF Sliding Fifth Wheel that delivers increased performance for those heavier duty loads. Boasting a D-Value of 170kN and an imposed kingpin load of 25 tons. It allows for a heavier payload without over specifying costly super-heavy duty sliders. With a low height of just 40mm, this mounting option utilises the Fontaine 170CI Heavy Duty Cast Fifth Wheel with heights from 148mm (183mm including slider).