While their origins can be found in bikes built to tackle such legendary events as the Iditarod Trail Invitational and the Arrowhead 135, today´s fat bikes have evolved into much more than sluggish snow crawlers. With the release of the first NoTubes rims designed specifically for this emerging category there are now rims designed to push the boundaries of what a fat bike can do. While our Hugo 52 for Plus Bikes are the first fat rims to feature our Bead Socket Technology, the innovations don´t stop there. Hugo´s ultra-low profile sidewalls combine with our special central raised box section to create a structurally superior fat rim that´s exceptionally light, fast-rolling, and nearly impervious to flat even when using tubes. Of course BST means the best tubeless technology available, and the special shape of the Hugo series rims creates a superior seal, inflating easily without a tube. Our interior rim shape also spreads out the overall contact area for better strength and support and excellent pinch flat protection. Fat bike rims with taller sidewalls and recessed center cavities can´t touch Hugo´s added stability and tubeless performance, and those who choose to use a tube will find our profile makes pinch flats virtually impossible. The next generation of fat bike rims has finally arrived.