Nathan Williams Signature Frame. When working on this frame strength and durability were always at the top of united bikes co’s  list, with the way Nathan rides constantly trying to lighten up a frame just didn’t make sense. What they have ended up with here is the strongest frame they have produced by thickening up the stress areas, adding custom ovalized down tubes and 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 the areas that can be done so safely, have come up with a what they feel is a perfect strength – weight ratio.

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