Riders that have previously held an Expert or "A" or Pro Sport Classification license from a recognized motorcycle race sanctioning body within the past two years may apply for entry into any or all of AMA NASMOTO pro or expert classes. Riders that have previously held a Pro license from an FIM or AMA recognized motorcycle race sanctioning body within the last 3 years and have finished within the top 20 in year end points or have ever finished on a podium including the current year of any AMA Pro Racing or FIM World Championship discipline are only eligible to compete in the SMX Open, SMX 450, SMX 250 Supermoto classes.

All other riders must begin in one of the Amateur, Novice, Beginner or Sport Mini classes.

The race referee has the right to move riders from their chosen or assigned class if their performance jeopardizes their safety or the safety of the other competitors. Riders will be assigned to a class that is better suited to their skill and speed levels.

The top five (5) riders from each class that have accumulated a minimum of 3 podium finishes will be automatically placed into the next highest available class for the new season. Riders that cannot provide suitable equipment for their appointed class may apply in writing to the AMA for exemption.

Only the top five (5) finishers in the Grand Championship in SM1and SM2 may use their finish position (1 - 5) as their rider number at the following year's Regional Championships and at the Grand Championship. All other riders must use numbers starting higher than 5.

Regional Championship NASMOTO events will serve as qualifying races that determine a position in the Grand Championship. The following riders from each Regional Championship NASMOTO will be eligible to compete in the Grand Championship:

The top ten (10) riders from the SM1and SM2 classes.

The top ten (10) riders from the remaining classes, unless that class is designated as a non-championship class.

Additional riders may be invited at the discretion of the AMA and NASMOTO.

The finishing order of the Grand Championship will be the order of the championship regardless of previously earned positions.

These competition categories replace the classes listed in the AMA Sports Rules, Chapter 4, Sections BB.2 and BB.3.

SMX Open: Pro or Expert rider, unlimited displacement single, or twin-cylinder machines with unlimited modifications except for mandatory wheel size of 16.5, 17 or 19 inches. No points or championship will be awarded for this class. Minimum age 16.

SMX 450: Pro or Expert rider, Maximum 450cc displacement single, or twin-cylinder machines with unlimited modifications except for mandatory wheel size of 16.5, 17 or 19 inches. No points or championship will be awarded for this class. Minimum age 16.

SMX 250: Pro or Expert rider, Maximum 250cc displacement single, or twin-cylinder machines with unlimited modifications except for mandatory wheel size of 16.5, 17 or 19 inches. No points or championship will be awarded for this class. Minimum age 16.

SM1 Open: "A" or Expert or "B" or Amateur rider. Unlimited displacement single, or twin-cylinder machines with unlimited modifications except for mandatory wheel size of 16.5, 17 or 19 inches. Minimum age 14. (Pro Licensed Riders See Rule 1)

SM2 250: "A" or Expert or "B" or Amateur rider. Single cylinder machines with maximum displacement of 125cc for liquid-cooled 2-strokes; 250cc for liquid-cooled 4-strokes, and unlimited modifications except for mandatory wheel size of 17 or 19 inches. Minimum age 12. (Pro Licensed Riders See Rule 1)

Open Amateur Supermoto: Amateur or "B" rider with unlimited displacement single, or twin-cylinder machines with unlimited modifications except for mandatory wheel size of 17, 19, or 21inches. Minimum age 12.

Novice Supermoto: Novice or "C" rider with unlimited displacement single, or twin-cylinder machines with unlimited modifications except for mandatory wheel size of 17, 19, or 21 inches. This class is for riders that have earned enough points in Beginner or are a "C" classified. Minimum age 12.

Beginner Supermoto (No Championship for this class): Beginner rider with unlimited displacement single, or twin-cylinder machines with unlimited modifications except for mandatory wheel size of 17, 19, or 21 inches. This class is for people who are new to racing. We will use a 10 point system to graduate people out of this class. Minimum age 12. Earning 10 points in the Beginner class upgrades a rider to Novice status.

Sportsman Supermoto: Anyone entered in any of the SMX, SM1 or SM2 classes is not eligible to race in the Sportsman class, even if the motorcycle meets the requirements for the class. Single or twin cylinder machines unlimited displacement (2- or 4-stroke). Original crankcase, cylinder and heads and original bore, stroke and displacement must be retained. No modifications are allowed to stock air box, suspension, or chassis. Brake rotors, pads and lines may be upgraded, but stock brake calipers and master cylinders must be retained. Other changes are allowed to: exhaust, tires, gearing, jetting, handlebars, levers, grips, hand guards (non-metal, open-ended are recommended), and cosmetics. Must use Original Equipment standard (stock) size wheels (must have 21 inch front wheel and 18 inch or 19 inch rear wheel) and full (stock) suspension travel. DOT tires are recommended. Minimum age 14.

Note: If the motorcycle was sold as a street-legal supermoto bike in the United States or Canada with 17 inch front wheels, and is listed on the Approved list on nasmoto.com, then 17 inch front wheels may be used on the bike. For street-legal motorcycles, DOT tires are mandatory.

+35 Vet: Expert or Amateur rider who is 35 years old by the day of the event, with unlimited displacement single or twin-cylinder machines (minimum displacement of 125cc) with unlimited modifications except for mandatory wheel size of 17, 19, or 21 inches. 16.5 Wheel size not permitted.

Premier Mini-Moto: A or B rider on single cylinder machines with a maximum displacement of 85cc (2-stroke) or up to198cc (4-stroke), otherwise unlimited modifications, with the exception that they must maintain a mini chassis. Maximum wheel diameter, 19" front, 17" rear. Minimum age 12. The only exception is that riders under 12 may enter with 5 years or more of racing experience.

Sport Mini-Moto (No Championship for this class): C level or Novice rider on single cylinder machines with a maximum displacement of 85cc (2-stroke) or 160cc (4-stroke). Original crankcase, cylinder and heads and original bore, stroke, and displacement must be retained. Modifications are allowed to stock air box, suspension, chassis, exhaust, tires, gearing, jetting, handlebars, hand guards (non-metal, open-ended are recommended), levers, grips and cosmetics, and after-market brake pads may be used. Minimum age 9.

Pro ATV Supermoto: Pro or Expert rider, unlimited displacement single, or twin-cylinder machines. Must use stock frame and ATV engine cases from the original manufacture of that make and model. OEM frames may have material added for strength; these changes shall not affect frame geometry. Minimum age 16.

Amateur ATV Supermoto: Amateur or "B" rider with unlimited displacement single, or twin-cylinder machines. Must use stock frame and ATV engine cases from the original manufacture of that make and model. OEM frames may have material added for strength; these changes shall not affect frame geometry. Minimum age 16.

Additional Classes: In addition to the classes described above, promoters may organize, advertise, and conduct additional classes to meet the needs of their particular market. Additional classes must be listed on the sanction application and approved by the AMA.