American Iron Racing

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CMC and AI cars racing in Texas.

American Iron is a group of North American road racing classes sanctioned by the National Auto Sport Association (NASA).

American Iron racing features domestic muscle or pony cars such as Ford Mustang, Chevrolet Camaro, and Pontiac Firebird in four classes, Camaro Mustang Challenge (CMC), American Iron (AI), American Iron Extreme (AIX), and American Iron Vintage (AIV). An additional CMC class to accommodate newer, higher horsepower models in planned for 2007. With its large, closely contested fields of V8 powered cars, American Iron racing has grown into the most spectacular racing class at NASA events around the country.

The different classes reflect various levels of permitted modifications, from the near showroom stock entry level Camaro Mustang Challenge (CMC) class, through to the "almost anything goes" American Iron Extreme (AIX) class at the opposite end of the scale. CMC and AI classes have a power to weight limitation, while AIX is unrestricted.

American Ironraces are run at all NASA regional events, as well as the annual National Championships held each year at the Mid-Ohio Sports Car Course.

In the 2008 Season AIV has been discontinued from competition due to lack of participation.