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Custom, Unique Builds Just for You 

Prepare to embark on an off-road adventure like no other with the all-new GTX Series at Function Drives Form. We've taken ruggedness to a whole new level, redefining the boundaries of off-road capability and exploration. Whether you're a seasoned trailblazer or a newcomer to the thrill of off-roading, the GTX Series is your ticket to an exhilarating journey through the great outdoors.

Our GTX Series represents the epitome of off-road engineering, designed for those who demand more from their vehicles. These rugged, all-terrain champions are built to conquer the most challenging landscapes, from rocky mountain trails to dense forest paths, and everything in between.

But off-road capability isn't the only hallmark of the GTX Series. We've seamlessly blended rugged functionality with modern design, ensuring that your off-road adventures are not only thrilling but also stylish.





Function Drives Form ("FDF") has a legacy beginning two generations back at the Felton Porsche dealership in San Rafael, California.  The enterprise expanded to include other marks including Audi, Volkswagen, International Harvester and Lincoln.  The Felton name appeared as participant in the first Pebble Beach Sports Car Club of America race, which became the beloved “Car Week” in Monterey, California. That historical passion continued to this generation, restoring vintage cars prepared for Pebble Beach, The Monterey Historics, The Sonoma Wine Country Classic & The La Carrera Panamerica. Eventually that experience and legacy landed at today’s FDF. 

Function Drives Forms creates usable, drive-able “works of kinetic art” that deliver daily utility, enjoyment & reliability.


Phone: (775) 391-3139


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