DIRT WURX U.S.A. is the exclusive racetrack design and construction firm for Feld Motorsports. This long-term contract means DIRT WURX U.S.A. designs and builds every course on the Monster Energy AMA Supercross Series, an FIM World Championship.

Over the years DIRT WURX U.S.A. has demonstrated the ability to design and construct race courses that are safe but challenging to riders ranging in skill from local sportsman to world class professionals, while at the same time being exciting and spectacular to the paying fans.

This depth of experience and work history has allowed us to grow to a point where DIRT WURX U.S.A. is now the premier racetrack design and construction team in the world.

DIRT WURX U.S.A. also designs and builds many racetracks for events that are outside the limelight. We have designed and constructed many courses for arenas, fairgrounds, public riding parks, outdoor Motocross facilities, and courses for private individuals who want the very best.