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WILMINGTON, Delaware, June 28, 2007

New Bike Wheel Survives on Rugged Terrain, Thanks to DuPont™ Zytel® Nylon

The new FRX5 bike wheel has what it takes to withstand the punishment of off-road recreational biking and competition. TAG Wheels, Newport Beach, Calif., makes the new wheel in a single piece using DuPont™ Zytel® nylon resin delivering excellent toughness, strength and stiffness.

FRX5 wheels in the Hammer Fest downhill event on Vancouver Island

Using FRX5 wheels in the Hammer Fest downhill event on Vancouver Island this spring, pro rider Dharma Fontaine hit a rock that flattened his rear tire early in the race. “At the finish line, after I stopped shaking and rattling, I checked the wheel expecting to find massive damage,” he said. “I was stoked to see a very small insignificant ding beneath the destroyed tire. These wheels really are incredible!” Severe impacts like that usually cause permanent rim damage to traditional wire spoke wheels, according to Fontaine.

Other advantages of the FRX5 over traditional wheels include fewer flats, reduced flat spots and less maintenance. It never requires truing, tension or alignment procedures needed for wire spoke wheels, according to George Kotzeff, president of TAG Wheels.

To make its innovative new wheel, TAG Wheels relies on a toughened, glass-reinforced grade of DuPont™ Zytel® nylon. “Extensive testing in the lab and in the field, shows that this material gives us just the right combination of impact resistance, strength, stiffness and moldability,” said Kotzeff.

FRX5 wheels manufactured by TAG Wheels

The FRX5 is an innovative, one-piece design that optimizes structural strength, impact resistance and functionality. Wall sections vary in thickness to provide additional strength and stiffness where needed. Each spoke has an internal rib. The hub shell is a robust, thick-walled construction, and it is keyed to optimize shear resistance and torque transfer, according to Kotzeff. The design minimizes pinch flats with a relatively thick, flat-topped bead and a resilient rim. The rear wheel has an integral chain-catcher feature to combat chain binding.

TAG Wheels manufactures FRX5 wheels using a patented lost-core molding process that makes possible its complex geometry and strong hollow structure. The manufacturing process starts with molding a metal mandrel from a low-melt-point alloy. This mandrel is then over-molded with Zytel® nylon. The mandrel, or core, is then melted out leaving behind the hollow-formed composite wheel. TAG Wheels supplies FRX5 composite wheels with high-quality DT Swiss 440 hubs. For additional information, please visit http://www.tagwheels.com or call 1-949-760-8972.

DuPont is a science-based products and services company. Founded in 1802, DuPont puts science to work by creating sustainable solutions essential to a better, safer, healthier life for people everywhere. Operating in more than 70 countries, DuPont offers a wide range of innovative products and services for markets including agriculture and food; building and construction; communications; and transportation.

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6/28/07

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Caption: Made of DuPont™ Zytel® nylon, trail bike wheel withstands sharp impacts that cause permanent damage to conventional wire wheels.

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