Ultra-light magnesium Trucks by Tensor The Mag Light series by Tensor is in their own words "The Lightest Trucks Ever" - weighing in 30% less than the average skateboard truck. This is done by its super light yet strong magnesium hanger and baseplate combined with its hollowed-out kingpin and axle. This makes a light set of trucks that feels smooth on grinds and fast on turns. This is also the updated version of the Mag Light truck featuring the new and improved All Terrain Geometry ATG.