The “Arantix” mountain bike from Delta 7 Sports uses an open lattice tube design made from carbon fiber and kevlar. They call the technique “IsoTruss.”
Each Arantix Mountain Bike frame takes approximately 300 hours to build, as Delta 7 Sports workers weave single carbon fiber strands to create the open lattice IsoTruss structure of each frame tube. Each bundle of carbon fiber strands are wrapped with Kevlar and then baked at 255 degrees Fahrenheit for four hours. The ends of the baked tubes are then machined before being joined with molded carbon fiber lugs to make a complete frame.

The frame weighs only 2.75 pounds. The price tag is pretty hefty at $7,000 for the frame alone, or $12,000 for a complete bike.

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