Nathan Williams signature United Mothership frame. When working on this frame strength and durability were always at the top of our list, with the way Nathan rides constantly trying to lighten up a frame just didn’t make sense. What we have ended up with here is the strongest frame we have produced by thickening up key stress areas, adding custom ovalized down tubes & chain stays for dent resistance, an all new gusset area combined with a longer head tube to provide a stronger junction, and then by trimming down areas that can be done so safely, have come up with a what we feel is a perfect strength to weight ratio.