Rules & Qualifying Information

For 2017 Supplemental Rules and Qualifying Processes for the Rocky Mountain ATV/MC AMA Amateur National Motocross Championship at Loretta Lynn’s, please see the MX Sports website:

For Road to Mammoth, King of the West, and Mammoth Motocross Rules and Qualifying Processes, see below:

2017: Rule #1: HAVE FUN!

No kicking, biting, scratching or hitting below the belt. We are all here to have a good time. Any person not having a good time will be sent home. It’s all about fun. This is a family event and we need to conduct ourselves in a reasonable manner. Entries are non-transferable and cannot be sold. All motos are final 15 minutes after finish of moto.

All racers are required to possess an AMA Membership also available for purchase at the track

Road to Mammoth Qualifiers:

Each racer will only have to qualify once. You may ride as many qualifiers as you wish, but you are only required to qualify once. Each class has been given a certain percentage of riders that qualify directly into the 2017 Mammoth Motocross Championship. The closing date of qualified entry is May 9th. The majority of the entries will come from the qualifiers, there will be a small percentage of entries available at on May 11th. You must ride the final at Mammoth in the class you qualify in at the qualifier. Sandbaggers will not be tolerated and will be removed from qualifying positions.

“I Qualified”:

Once a racer has qualified, they will be posted on the “I qualified” section of by Wednesday following the qualifying round.

The link will gain access to entry to the final. It’s the racers responsibility to enter the final by or forfeit qualified position. You only have to qualify at one round to be able to enter the Mammoth Motocross

To protest illegal size of motorcycle you must post $500 (Two Stroke) $1000 (Four Stroke) and be in the same class of rider you are protesting. One half of the Dollars goes to the bike owner if it is legal. One half stays with us for administration. Anyone protested for age in Vet or Senior class must produce a valid ID to race officials. You must be in the same class of rider you are protesting. If protesting rider ability level you must produce verification (on-line proof recent result sheets.). You must be in the same class of rider you are protesting. Rider must be at the line for the start. You must start your first moto to be able to start your second moto or qualify for the Main.

You cannot skip first moto and ride second moto to qualify. Adjustments on race day may be made to qualifying totals if divisions are not equal. Starting positions on gate for first moto is determined by draw on a first-come basis.

Starting position on gate for second moto is determined by first moto finish. Starting position on gate for Final is determined by position from qualifying races and division. If you jump gate at start you will be penalized one lap. You may pack in front of the gate at the finals (no Tools or Farming) You will be disqualified if you pass or ride unsafe during a yellow flag.

Supercross Format: Racers with more than one division: Event staff will post the numbers of riders transferring to Main Event. If you transfer from first moto you go directly to Main Event. If not you ride in second moto and try to qualify for the Main Event. Results in Main Event are final results for this race; all qualifying positions will come from main.

Motocross Format: Races with only one division of racers will be scored on a two-moto format with the second moto being the tiebreaker. Check your race schedule to determine how your race will be scored. All rulings are made by referee and are final

Equipment classes:

+25 +30 +40 +50: All size bikes are allowed for the running of these classes.

All Classes are Modified. Limited bike may ride with Mods but there are no limited classes

50cc Shootout (61cc 2-stroke max) Engine Modifications open,
Must use original engine type lower end and cylinder
Single Speed Transmission only
Overall Length limited to 42″ axle to axle,
Suspension Modifications open

65cc: 59-65cc (Stock Bore and Stroke)

85cc: 9-12 Yrs 2 Stroke 79-85cc only, No Big Wheels, No 150f (Stock Bore and Stroke). 16″ Rear Max 85cc: Mini Senior 1 12-13 yrs 79-85cc 2 Stroke/75-150cc 4 Stroke (Stock Bore and Stroke). 16″Rear Max 85cc: Mini Senior 2 9-14 Yrs 79-85cc 2 Stroke/75-150cc 4 Stroke (Stock Bore and Stroke). 16″ Rear Max Supermini 1 12-15, Supermini 2 13-16 yrs (112cc 2 Stroke/150cc 4 Stroke) 16” Rear Max 19” Front Max Women (14+) Amateur: (99cc-250cc) 125-450cc,

College Boy A/B/C (18-24 yrs) (122-Open cc)

Schoolboy 1 (12-16) B/C 86cc-125cc 2 Stroke/75-150cc 4-Stroke. Min Wheels 19”F 16”R

Schoolboy 2 (13-17) B/C 100-250cc 2 Stroke/126-250cc 4-Stroke. Min Wheels 19”F 16”R

Open Classes (144-Open cc 2 Stroke/250-450 Four Stroke) (21″ Min Front)

125cc B/C (12-16) (21” Min Front)

250cc Class (Up to 250cc-2 Stroke, 250cc 4 stroke)

250cc Open Only (100-250cc 2 Stroke/126-250cc 4 Stroke) (21” Min Front)

450cc Class (250cc-Open cc) (no 125cc or 144cc)

Top 5 random Tear down All mini Classes


Age classes:

Minimum age for mini riders is 5, All mini classes is Age based on age as of Jan 1, 2017 Supermini/Schoolboy through 16 class based on age as of Jan 1, 2017

Plus 25 years of age as of day of race final (June 23) 30+ years of age as of day of race day final (June 18) 40+ years of age as of day of race final (June 18) 50+ years of age as of day of race final (June 18) Ability Level: C Rider-Novice,  B Rider-Intermediate,  A Rider- /Expert/Pro Pro-Sport


USFS Requirement

Mammoth Motocross Finals

Pit riding: No Pit bikes, No Golf karts, No Rhinos, No excessive speed on Race bikes in pit area. Dogs: Dogs are not allowed at the Mammoth Motocross BIKE WASHING: Washing of bike in the forest is prohibited. There are facilities in the Town of Mammoth Lakes for washing. Enforcement could occur. Absolutely No bike washing at the track

Format will be as in the previous year with a percentage of each class qualifying directly into the final. Saturday practice day, Sunday all classes race. Once a racer has qualified, they must register for the final prior to May 9th to secure an entry.


RTM Qualifiers per class Rd 1-5 Rd 6 LCQ
Class Name Qualifiers Pala MX
30 C 10 20
30 B 7 15
30 Pro 5 10
40 C 10 20
40 B 5 10
40 A 5 10
50 C 5 10
50 B 5 10
50 A 5 10
50cc 6-8 5 10
65cc 7-9 10 20
65cc 10-11 10 20
65cc Open 10 20
85cc 9-12 10 20
Mini Senior 1 12-13 10 20
Mini Senior 2 9-14 10 20
Supermini 1 12-15 10 20
Supermini 2 13-16 10 20

Open C

10 20
Open B 10 20
Open Pro 10 20
Schoolboy 2 (13-17) B/C 10 20
Schoolboy 1 (12-16) B/C 5 12
25+ Yrs 5 12
FMF 2-Stroke Challenge 10 20
250cc C 22 30
250cc B 15 30
250cc Pro 10 20
College Boy A/B/C (18-24) 10 20
450cc C 14 30
450cc B 10 20
450cc Pro 10 20
Women (12+) 5 10
250 C Jr 12-16 10 20
250 B/C Open 10 20



Award – AMA King of the West Title

  • AMA King of the West #1 Plate
  • Special Exclusive Red background to complete with for that years Mammoth Motocross
  • Exclusive first gate pick at the 50th Annual Mammoth Motocross Moto 1 for that year


Qualifying Rules

  • Qualifying events include 6 RTM events  and the Cal Classic event. Rider must start 4 race events in the same class to qualify for the #1 Plate.
  • Points will be taken from the Top 4 Overall finishes in series.  Points not used will be marked with an asterisk on the Points tab on the Results Page on web site
  • Top 5 riders for each mammoth class will get that gate pick for that years Mammoth event for the class earned.  Must start at least 4 race rounds to get gate pick
  • Cal Classic – A select number of classes will earn points for that years King of the West Series.  Selected class will  be noted on entry form and on web site.
  • King of the West Series Points will be posted on web site under Results – Points.  It is the riders responsibility to insure that all points are correct.  Any questions email the points keeper at
  • Tie Breakers – If at the end of series riders are tied in points.  Rider with the best finish in the last race will get the higher position.
  • Double Points Events.  Cal Classic and Last Chance Qualifier (Final Round) check web site for dates


2017 Road to Mammoth

(Round #1) Feb 5th, Glen Helen, San Bernardino, Ca

(Round #2) Feb 19, LACR Palmdale, Ca

(Round #3) March 5th, Oatfield MX, Turlock Ca

(Round #4) March 19th, 333 Mx Park, Victorville Ca

(Round #5) April 23rd, Hangtown, Sacramento Ca

(Round #6) April 30th, “Last Chance Qualifier”, Pala Raceway

Format will be as in the previous year with a percentage of each class qualifying directly into the final. Saturday practice day, Sunday all classes race.


Once a racer has qualified, they must register for the final prior to May 9th to secure an entry.


Regular Non-Qualifying entries will open on May 11th, to fill the final racing spots available.

50th Annual Mammoth Motocross Championship Final

June 16th             30/40/50 Practice

June 17-18           Vet Championship Weekend

June 19                 Mini Practice

June 20-21           Lucas Oil Mini Championships

June 22                 Open Practice

June 23                 Open/Schoolboy 1 & 2/+25 Championships

June 24                 250 Championship/College Boy /FMF 2-Stroke Challenge

June 25                 450 Championship/Women +12/250 C Jr/250 B-C Open


Questions Regarding Road to Mammoth Qualifiers Call 2xpromotions at 559-761-0897

Questions Regarding the Mammoth Motocross Championship Final Call Mammoth Motocross office at 760-934-0605



White Backgrounds/Black Numbers
All C Classes –
65cc 6-9 – White Backgrounds/Black Numbers
85cc 9-12- White Backgrounds/Black Numbers

Black Backgrounds/White Numbers
All B Classes –
65cc10-11- Black Backgrounds/White Numbers

Yellow Backgrounds/Black Numbers
All Pro/A Classes –


Smoke and Fire Vintage – Your Choice
All 50+ A – Your Choice
All 50+ B – Your Choice
All 50+ C – Your Choice
50cc – Your Choice
65cc Open – Your Choice
Mini Sr 1 12-13 – Your Choice
Mini Sr 2 9-14 Your Choice
Supermini 1,2 – Your Choice
Schoolboy 1,2 – Your Choice
College Boy – Your Choice
Women 12+ – Your Choice
Two Stroke Challenge – Your Choice
+25 A/B/C – Your Choice
125cc – Your Choice
250 BC Open –  Your Choice
250 C Jr – Your Choice
Supermini Allstars – Your Choice