AMA/D14  ATV MX Rulebook & Guidelines

ATV MX Chair:                      Vice Chair:                                      Rider Rep.:                           Treasurer:

Ryan Day                                Chris Ice                                          Dew Millhisler                         Jessica Simpkins

                                                                                                                                                       4280 Matthew Ln

Attica, MI                                                                                        Hope, MI                                  White Lake, MI 48383

248-521-3529                                                             

[email protected]                                                                 [email protected]

Mail Reports and Points Fund Money to:

Danielle Day - 5950 Lum Rd, Attica MI 48412 -- 810-656-0282  --  [email protected]

Referee Duties:  Referee must send event report to the points keeper within 3 days after the event.  Report shall include date and type of event, results of each class and number of riders, and check or money order for the points fund.  Points fund check shall be calculated at a rate of $4.00 per rider.

Adult Classes

A - Expert - cash payout

B - Intermediate - dealer check/trophy

C - Novice - trophy- NO year-end championship awards

14+ age class - Cash For A Riders (Dealer check value), Dealer Check For B Riders, Plaque /trophy for C Riders

30+ - age class - cash payout

40+ - age class - cash payout

50+ - age class - cash payout

2 Stroke open - dealer check/trophy

W - Women - must be 13 or older (13-15 year olds must comply with Schoolboy Jr/Sr guidelines) - trophy

U - Utility - To qualify for this class, the ATV must satisfy at least one of the following conditions: must come from factory with racks, must be 4 wheel drive, have an automatic transmission, or it must have an automatic clutch - trophy

Schoolboy Jr. - 13-15 years old - (91-300cc 4 stroke Production or 91cc-200cc Production machines) - trophy or dealer check

Schoolboy Sr. - 14-17 years old - (200cc-400cc 4 stroke Production machines) - trophy or dealer check

Limited Stock Sport - (14+) new class

    ATV Qualifications:  200cc 2 stroke and up: 250cc 4 stroke and up

1. To be eligible for a Limited Stock Sport class the following CANNOT be changed or modified:   air box (including lid), frame, A-arms, fuel tank, carburetor (jetting changes allowed), rim size, electronics, stroke, exhaust system with spark arrestor, swingarm, internal engine components, wheel hubs.

1. Cylinder re-plating in allowed but must retain the original manufacturer’s bore and port specifications

2. Changes to carburetor jetting is allowed

3. Clutch plates, pistons and piston rings may be aftermarket items as long as they maintain the stock shape, design and material of the OEM parts

4. High-compression pistons are not allowed

5. All other internal engine components must be stock OEM parts

6. Material may be added to the existing frame for strength, including welding.  These changes shall not affect frame geometry

7. OEM front and rear suspension can be altered with internal modifications only.  Shock linkage and suspension spring rates may be changed to any commercially available part.

      2.  Any items not listed above may be changed or modified.

     3.  Violations of the Limited Stock Sport class rules as determined by the protest process or by the referee of the event will result in a disqualification from the event.  A second violation of the Limited Stock Sport class rules will result in a disqualification from the event and a suspension from AMA competition for one year.  However, if violation is deemed by the referee to be cosmetic in nature, with no performance advantage or willful misconduct involved, he may issue a warning or fine in lieu of disqualification.  

       4.  To be eligible for Limited Stock Sport class that use oil-injection systems, only oil may be put in the reservoir.  Pre-mix gasoline is not allowed in the oil-injection system.

Required Safety gear:  Nerf bars, heel guards, tether.  See Rules and Regulations for other recommended and required personal protection/safety gear.

ATV Displacement Must Be Age Appropriate

Award:  Cash For A Riders (Dealer check value), Dealer Check For B Riders, Plaque /trophy for C Riders

Youth Classes

50 Mini - (Mini track class) (age 4-6) Trophy CVT or single speed automatic.  Riders may be advanced to the 50 Open Class as it is deemed he/she is outclassing the field.  This is a beginner class for riders with limited race experience and beginner riders.  Trophy

50 Open- (age 6-8) Trophy

70 Mini - (Mini track class) (age 6-11) 0-70 cc CVT or single speed automatic.  Riders may be advanced to the 70 Open Class as it is deemed he/she is outclassing the field.  This is a beginner class for riders with limited race experience and beginner riders.  Trophy

70 Open - (age 6-11) 0-70cc Trophy

90 Auto/Production - (ages 8-15) 51-90cc 2 stroke or 51-125cc 4 stroke HAND CLUTCH WILL BE ALLOWED.  Trophy or dealer check.

90 Mini – (Mini track class) (age 8-15) 51-90cc 2 stroke or 51-125cc 4 stroke quads. Riders may be advanced to the 90 Open Class if it is deemed that he/she is outclassing the field. This is a beginner class for riders with limited race experience and beginner riders.  Trophy

90 Modified - (age 8-15) Trophy or Dealer Check

Super-mini - (Age 8-15) 71-105cc 2-Stk; 75-150cc 4-Stk Trophy or Dealer Check

Youth Open - (age 6-15) 51-105cc 2 strokes and 51-150cc 4 strokes.  Class is open to CVT’s, shifters and mods.  Rider must be on an age specific ATV.  Riders 7 years and under, may ride no larger than a 70cc ATV, riders 8 years and older may ride 90cc 2 strokes and 125cc 4 strokes.  Trophy or Dealer Check

Call ATV Chairman, Ryan Day with Questions: 248 251 3529 or Vice Chair Christopher Ice at 989-205-0487

2018 ATV MX Rules 

2017 ATV MX Rules