2017 ATVMX National Championship Supplemental Rules

The following Rules supplement the current AMA Racing Rulebook, which governs amateur ATV racing. Current AMA or ATVA members in good standing may compete. For the 2017 AMA Racing rulebook, go HERE.

Revised: 12.22.16


  1. Pro-Am Class
    1. The following riders are eligible, but not required, to compete in the Pro-Am class:
      i. Riders competing in the class in the previous year, unless otherwise ineligible;
      ii. Top 5 ranked riders from previous year "A" classes; and
      iii. Top 5 ranked riders from previous year GNCC or WORCS Pro-Am classes.
      iv. Official Discretion: Riders not meeting the above criteria will be considered on a case-by-case basis based on competition experience. Applications for eligibility under this criteria should be submitted in advance in order to avoid delay at the event.
    2. The following riders are NOT eligible to compete in the Pro-Am class:
      i. Top 10 ranked riders from 2015 or 2016 AMA Pro class;
      ii. Pro-Am Class champion for two (2) or more years.
      iii. ATVMX, GNCC or WORCS Pro class champions in the previous five (5) years.
    3. Pro-Am riders earning 130 class points (Section J.2) in the current or previous season are eligible for the Pro class as an additional class. Pro-Am riders competing in the Pro class as an additional class are not eligible to compete in any other class. All other Pro-Am riders are eligible for the Pro Sport (Pro-Am/A) class only as an additional class. Otherwise, once a rider advances to the Pro-Am class he is no longer eligible for an "A" class without pre-approval.
    4. Motos will be held on Sunday.
    5. Class purse limited to top 3 overall positions. No championship bonus will be paid.
  2. "A" Classes
    1. All "B" riders ranked in the top three of their class earning at least 50% of the points earned by the class champion in the previous year. Ranking is based on year-end series points and not the banquet awards.
    2. Riders that have an "A" ranking in any other motocross series. This applies to both AMA and non-AMA sanctioned events.
    3. "A" class riders may only advance to the Pro-Am or age division class.
  3. "B" Classes
    1. All "C" riders ranked in the top 3 of their class earning at least 50% of the points earned by the class champion in the previous year. Ranking is based on year-end series points and not the banquet awards.
    2. Riders with a "B" ranking in any other motocross series, AMA and non-AMA sanctioned events.
    3. "B" class riders may only advance to an "A" or age division class.
    4. Effective 2018, "B/C" class champions from the previous year are not eligible for a "B/C" class. (Revised 12.22.16)
  4. "C" Classes: Novice skill level riders and riders that do not otherwise qualify as an "A" or "B" level rider. Riders who receive or have ever received any type of OEM factory support in any class are not eligible for the "C" class. "C"class riders may only advance to a "B" or age division class.
  5. Age: For Amateur classes, riders must be 16 years or older on the date of the event in order to compete on any size machine in any class. For Youth classes, age is based on the rider's age on January 1, 2017. However, riders, including youth, who change age during the season, may stay in the class they started the year in, or may advance to the older division. Youth riders may advance to the next higher age class in the Youth Division prior to their age change, only if they will be eligible to do so at any time during the year. However, once a rider moves to the next higher age class, they may not move back to the lower age class, per AMA rules. Points accumulated in one class do not advance with the rider to another class.
  6. Advancement: Amateur riders who participate in a higher classification (i.e. "A", "B" or "C") at any AMA or non-AMA local or national event will be considered as advanced to that higher classification and may not return to the lower class. Youth riders who compete in a higher age group may not return to their actual age group. Youth riders may compete in a non-"A" designated Amateur class if age appropriate.
  7. Changing Classes: A rider may petition to move to a lower classification based on class finishes. However, in order to do so, the rider must first petition his/her AMA district and/or the AMA/ATVA Motocross Manager for reclassification, and provide Event Organizer with a copy of the granted petition, prior to racing in the lower classification.


  1. Class Descriptions: Machine eligibility, including displacement limit and production requirements, will be defined in the Class Chart. 2018 models are not eligible in any class.
  2. Youth Classes: No engine displacement reduction permitted.
  3. Production Rule: OEM motor and matching frame combination model required. Frame geometry must remain as designed by the OEM, including all suspension pivot points. Material may be added for strength but not removed from the OEM frame. Engine modifications, frame reinforcements, and aftermarket A-arms, swing-arms and suspension are permitted. No engine displacement reduction permitted. See, 2017 ATVMX Class Detail for approved models.
  4. Automatic: Restricted to CVT or automatic transmission and automatic clutch. Machines must be able to idle in gear, with the machine at a full stop, without manually disengaging the clutch. Age of rider may not exceed 13.
  5. Limited Class: Production models only.
    1. The following are NOT permitted in the LIMITED CLASS:
      i. High compression pistons, port clean-up; or aftermarket ECU units.
      ii. Changes or modifications to the internal engine components, carburetor, EFI throttle body, air box, intake boot. Engine blue printing and crank balancing are prohibited.
      iii. Changes or modifications to the frame, sub-frame, steering stem, swing arm, A-arm, Axle and wheel hubs are prohibited. Provided, that material may be added to the existing frame for strength, including welding. Frame geometry must remain as designed by the OEM, including all suspension pivot points and mounting locations.
      iv. All parts of the exhaust system as designed by the manufacturer (OEM) for a particular model and year must remain stock. This includes, but is not limited to, the head pipe, mid pipe, and silencer. Updating to a more recent year exhaust is prohibited unless the OEM part number is the same.
      v. Gaskets, air filter screen, O-rings or other components may NOT be removed.
      vi. Wheel hub spacers or extenders are prohibited.
      vii. Only production tires readily available to the general public may be used.
    2. The following ARE permitted in the LIMITED CLASS:
      i. Replacement fuel filters, air filters, gas line, handlebars, handlebar mounts, crossbar pads, non-metal open-ended hand-guards, grips, twist throttle, front bumper, rear grab bar, serrated foot pegs, front shock shaft protectors, decals, spark plugs, spark plug caps, sprockets, and seat covers.
      ii. Programming or mapping changes to the stock OEM ECU unit and carburetor jetting ARE permitted.
      iii. Cylinder re-plating is allowed but must retain the original manufacturer's bore and port specifications.
      iv. Clutch plates, pistons and piston rings may be accessory items, so long as they maintain the stock shape, design and material of the OEM parts.
      v. OEM front and rear suspension can be altered with internal modifications only (i.e., shock valving and pistons).
      vi. Spring rates may be changed to any commercially available part. Otherwise, no dimensional changes to shocks permitted.
      vii. Tires, rims and rim size can be replaced with OEM or aftermarket rims of the same or different diameter or offset.
      viii. Nerf bars, replacement wheels, bead locks and steering dampeners are permitted.
      ix. Fenders may be trimmed.
      x. Air box lid may be removed or modified.
      xi. All other internal engine components must be stock OEM parts.
      xii. Changes that are cosmetic in nature are allowed, so long as there is no performance advantage.
      Any items not listed above may be changed or modified.
      Violations of the Limited Class rules as determined by the protest process or by the event referee may result in disqualification from the class, or re-assignment to the appropriate class if deemed unintentional by the event referee. A second violation within one calendar year may result in a disqualification from the class and a suspension from AMA competition for one year.
  6. All Other Classes:Engine and suspension modifications, frame reinforcements, aftermarket A-arms, swing-arms and custom frames are permitted in all other classes.Production machines are eligible in all classes.


The AMA Equipment Standards List in the AMA Racing Rulebook, which governs amateur ATV competition, will be enforced. In addition, the following apply:

  1. Maximum machine width is 50" in amateur classes.
  2. Tether cords and nerf bars or suitable floorboards are required.
  3. Control levers must have ball ends; axle nuts must have cotter pins or clips; glass components/lights must be covered; horns, bells or other sound devices are prohibited.
  4. Sound: The maximum sound limit is set at 98dB/a for 2-Stroke and 96dB/a for 4-Stroke engine.
  5. Fuel: Only petroleum-based gasoline as defined by the American Society for Testing and Materials (ASTM), designation: D4814, may be used. All fuel must be stored in approved containers. E15, E85 or other "flex fuels" not designed for production ATV's is prohibited.
  6. Machines may be bored or stroked in order to increase engine displacement, so long as the engine size is stamped on the case and the class limit is not exceeded, i.e., 400cc engine may be increased to a maximum of 450cc in the 450 class.
  7. All machines are subject to random and technical equipment inspections any time prior to, during or after the event.
  8. The machine a rider competes on in the first moto/qualifier is the official machine of the rider for that event, and may not be switched during the event. Provided, however, that the engine may be changed during the event, so long as it is replaced with an engine of the same make, model and displacement. Provided, further, that the Race Director or Chief Technical Inspector may grant permission to change the main frame if it is damaged or deemed to be unsafe for competition.


  1. Machines must have vertical number plates mounted on the front bumper and rear grab bar. Plates may not be mounted to the handlebars, be made of wood or metal, or be cut down for cosmetic purposes. For single and two digit numbers, plates may be mounted vertically; for three digit numbers, plates may be mounted horizontally.
  2. Numbers shall be a minimum of 6" block numbers (no shading or outlining). No other letters or symbols may be used except as indicated by the Event Organizer.
  3. Number plates and numbers shall be of contrasting colors, clear, legible and have a professional appearance.
  4. The top two inches of the plate is reserved for the series logo identification; the bottom two inches of the plate may be used for sponsor/rider identification.
  5. Number Plate Color Codes are recommended to be the following (Age and Women classes should use the color code based on skill level, i.e., A, B, C):
    Pro-Am Green White
    "A" White Black
    "B" Yellow Black
    "C" Black White
    Youth White Black


  1. A current AMA Membership is required for all riders. Memberships are $49 per year or $20 per single event, and $29 per year for youth racers under the age of 12 (11 and under). Family Memberships are also available at a rate of $98 for up to 5 members. Memberships are available at Rider Registration or in advance online at www.americanmotorcyclist.com.
  2. Proof of age (i.e., birth certificate or driver's license) must be available upon request by event referee or at rider registration.
  3. Riders must register for the race before riding their machine anywhere on the facility grounds.
  4. Riders may not exceed first gear idle when traveling to/from their pit area and must always wear a helmet.
  5. Riders will be required to either purchase or rent a transponder prior to registration.
  6. After registration, all machines must be taken through Tech Inspection prior to competing. Safety equipment and machine/rider eligibility are the sole responsibility of the rider.Frame Stickers will be used to identify authorized race machines.


  1. There will be no more than 20 riders per gate drop. Motos/qualifiers may be stagger-start.
  2. If there are 21 or more riders in a class, the following program will be used:
    1. The top 4 riders will be divided into equal qualifier groups based on current point standings, with the higher ranked riders being assigned to different groups to avoid all top ranked riders competing in the same qualifying heat, i.e., 1st and 2nd place in points and 3rd and 4th place in points will be in separate groups. This does not necessarily mean that 1st and 3rd will always be in the same division or 2nd and 4th will always be in the same division. The number of divisions will depend upon the number of entries.
    2. All riders who do not advance from the qualifiers are eligible to compete in the last chance qualifier (LCQ) races.
    3. Rider advancement from qualifiers and LCQs are as follows:
      20 entries or less 1 ALL 0 NA
      21 - 36 Entries 2 8 1 4
      37 - 40 Entries 2 8 2 2
      41 - 56 Entries 4 4 2 2
      57 - 76 Entries 4 4 3 2/1/1*
      77 - 97 Entries 6 2 4 2
      *Fastest LCQ transfers two (2) riders; other two transfer one (1) rider each.
    4. Riders advancing from qualifier motos will transfer their earned points according to their finishing position, i.e., a rider finishing in first place will receive one (1) point. Riders transferring from the LCQ will transfer their earned points according to the next finishing position, i.e., if eight riders transferred from each of the qualifier motos, the winner of the LCQ will receive a 9th place position, and so on. In the event the 2nd moto is cancelled, points will be awarded based on finishing position in qualifying motos, followed by the LCQ finishing positions; whereas event awards will be awarded based on 2nd moto gate pics.


  1. Gate Pics: First moto or qualifier gate picks will be determined by computer draw. Second/final moto gate pics will be determined by first moto/qualifier finishing position, with the faster qualifier moto taking precedence. At the final round of the series, first moto or qualifier gate pics will be determined by the current Top 10 point standings, and the remainder by computer draw.
  2. The Staging Area and Start Line are "No Smoking" zones.
  3. Once a machine enters the Staging Area and is called to the Starting Gate, the machine will not be permitted to return to the paddock. If the machine is removed from the Staging Area after this point, the rider will not be permitted to start the race.
  4. Riders should accompany their machines to the gate. Once a rider pulls into a gate slot, he may not move to another gate unless directed by an official. Machines must be positioned straight and in the center of the gate. Youth riders may straddle ruts so long as a minimum space of 6-inches remains between riders. The back tires cannot rest on top the backstop.
  5. Only the rider's designated Mechanic may accompany the rider to the gate. No other persons are permitted on the Start Line. Sponsors and family may only visit in Staging, but not on the Start Line.
  6. No one is permitted in front of the Start Gate. Absolutely no maintenance can be done to the area in front of the Start Gate.
  7. The area between the Start Gate and the backstop may be groomed with hands and feet only - tools may not be used. Mechanics may not use golf shoes or cleats in this area. No dirt, water or other material may be added to the area between the Start Gate and the backstop. However, excess rain water can be removed from this area with cups or buckets.
  8. Riders must start each race with their tether cord properly affixed.
  9. The Start Procedure is as follows:
    ● 2 Card will be held for 10 seconds
    ● 1 Card will be held for 10 seconds
    ● 1 Card will be turned sideways
    ● Gate will drop between 2 and 5 seconds
  10. Mechanics must step behind the backstop at the display of the 1 Card.
  11. Riders may request a 2-minute grace period for minor repairs at any time prior to or during display of the 2 Card. Once the 1 Card is displayed, no additional time will be given. Only one grace period will be given per moto.Grace periods will not be given to clean equipment or for cosmetic purposes.


  1. Motos will be 5 Laps for Pro Sport, "A" and College classes; 4 Laps for all other classes, weather permitting.
  2. To accommodate the 50cc classes, a shortened or separate track may be used as necessary.
  3. A rider leaving the course may continue the race by properly re-entering the course at the closest point to where the rider left the course, without gaining an advantage. If a rider leaves the course for any reason, the rider must immediately slow down to a safe speed so as not to endanger life or limb of other riders, crew members, officials, or the public. It will be the responsibility of the Race Director or his designee to determine whether the rider gained an advantage upon re-entry or failed to slow down after leaving the course. A rider may be determined to have gained an advantage without gaining a position.
  4. A machine that leaves the confines of the race course boundary during a moto race will not be permitted to return to the racetrack.
  5. Outside assistance to a rider on the course is prohibited except when the assistance is given by flag marshals or officials for the purpose of control and safety. Mechanics may assist riders hung up on the starting gate; Otherwise, Mechanics must remain in the Mechanics Area and may not enter or cross the race course for any purpose.
  6. Radios are permitted between pit crew members, but not with or between riders.
  7. No rider may ride in such a manner as to endanger life or limb of other riders, officials or the public. Riders will be penalized for the reckless operation of their machine or for running into an official.
  8. Unsportsmanlike conduct or the deliberate ramming, blocking, or intentional contact with another rider will result in a penalty.
  9. Team tactics include blocking, allowing another rider to pass in order to affect the outcome of the race. Riders involved will be penalized.


  1. Transponder scoring is the official scoring process. However, lap times are not official results. Official results will be posted after each moto.
  2. Race Finish: The race officially ends for all contestants at the completion of the lap in which the checkered flag is displayed to the winner.Should the checkered flag be displayed later than the official distance, the finishing order will be decided on the basis of the official advertised distance.
  3. Finish Line.The official Finish Line will be marked and will coincide with the location of the timing loop, not at the Finish Line arch or the Finish Line flagman.
  4. Finish Position: Riders will be scored in order of finish and laps completed. It is not necessary to complete all laps in order to be scored. Any rider who makes at least one lap will get a finish position for that moto.
    DNF: A rider who starts the race but does not make at least one lap will receive a "Did Not Finish" or DNF. A DNF results in moto points equal to the total number of riders in the class, but not less than 20.
    DNS: A rider who does not report to staging will get a "Did Not Start/Stage". A DNS results in moto points equal to the total number of riders in the class, plus 30 points.
  5. Awards are given at the rate of 10 awards per class based on event overall results.


The top 10 numbers for each class are reserved for the top 10 ranked riders from the previous year. A rider with an earned number has the option to reserve a different number, if available. To reserve a number go to www.atvmotocross.com for rider requirements.


  1. To be eligible for series awards, a rider must enter the following minimum number of events in the same class. However, only the maximum number of events will be counted. In the event of gross, reckless, or willful misconduct, at the discretion of the Official, a Disqualification "DQ" may not be used as a throw-away.
    Pro-Am 6 8
    Amateur 5 7
    Youth 5 6
  2. Overall points will be earned in each class per event as follows*:
    1st 30   8th 13   15th 6
    2nd 25   9th 12   16th 5
    3rd 21   10th 11   17th 4
    4th 18   11th 10   18th 3
    5th 16   12th 9   19th 2
    6th 15   13th 8   20th 1
    7th 14   14th 7      
  3. Ties: Ties for the class championship will be broken by the most first place moto finishes, then by the best overall finish in the final race of the season if necessary. Ties for other amateur class positions will be broken by the best overall finish in the final race of the season.


  1. Protests must comply with the AMA Racing Rulebook. Protests must in writing and delivered to the referee no more than 30 minutes after results have been posted. The AMA Racing National Championship Protest Form will be made available from the Referee.
  2. In the event of a technical protest involving a teardown or removal of the engine from the frame, the protested rider may elect for the inspection to occur either before or after the final moto involving the protested machine. In the event the inspection is made after the final moto, the machine will be impounded between motos and/or the engine sealed pending the inspection, with the exception that minor repairs and maintenance may be made under Event Organizer supervision.
  3. The claiming rule value is three times the Manufacturer's Suggested Retail Price (MSRP).
  4. Penalties will be assessed at the discretion of the official based on the severity of the offense, and may include one or more of the following: position(s), lap(s), time adjustment, disqualification, suspension, loss of championship points, fine, probation, warning, etc. In the Limited classes, if a violation is deemed by the referee to be cosmetic in nature, with no performance advantage or willful misconduct involved, a warning or fine may be issued in lieu of disqualification.