2018 AMA Rule Book

2018 SIDRA Rule Book




A. DIVISION: An assessment of individual contestant’s relative ability in terms of A, B, and C.

B. CLASS: THE CATEGORY IN WHICH A RIDER MAY COMPETE BASED ON; 1) Age 2) Sex 3) Kind of machine (2, 3, or 4-wheeled machines) 4) Engine size (all SIDRA riders must compete on production based two wheeled machines in their respective classes to earn points and year end awards).

C. TRANSFERS: The process performed either by the race committee or the points steward, whereby they evaluate an individual rider on individual abilities and overall finishes in the races competed in, and move the rider up or down accordingly. 


A. Set rules and standards for clubs and riders in cross country and ISDE type events.

B. To handle all protests to any rider’s disqualification at the regular or special scheduled meetings after said protest.

C. Administer and keep track of points from all events sanctioned, and publish annual and semi-annual points standings.

D. Provide for qualified riders, year-end awards for the top three or 33% (whichever is the least amount, signed up in their classes for the However, more awards may be given out if the SIDRA race committee has funds available.

E. Maintain a racing program that will continue to encourage new riders.

F. Continue to try to achieve safe standards for course layout and marking.


A. GENERAL:The SIDRA race schedule will run from Jan. 1 to Dec. 31.

  1.  All SIDRA sanctioned events should be two weeks apart.
  2. No SIDRA rider can be made to race more than one day every two weeks for points. SIDRA can grant a waiver for this rule in extenuating circumstances.
  3. On any dual sanctioned or multiple day event, the SIDRA day to receive points is preferred to be the first day, to eliminate pre- riding of the (This can be waived if voted on by the SIDRA race committee prior to the race).
  4. Minimum time for cancellation of an event is twenty-one days prior to race date, unless information leading to the cancellation from outside sources is received in less than the required time limit. 
  5. If a club cancels their race, it is their direct responsibility to make sure all SIDRA members are informed prior to the event date.
  6. All SIDRA card holders are eligible to earn overall and class However, Any and All racers seeking year end awards for the current racing series, MUST belong to a SIDRA club in good standing.
  7. All racers must present a current AMA Card to race in any SIDRA sanctioned If rider /racer does not present a valid AMA card, rider/racer must purchase a new one on site on the day of the event.
    1. Racer/Rider may purchase a one event pass the day of the event if they do not choose to purchase a full fee AMA membership. 
  8. All riders must have the correct color number on the correct color background for the class they are entered in, (on all three number plates) or they can be disqualified. 
  9. Pre-entry on timed events cannot open until 3 days after the flyer postmark.


  1. STARTS:
A. All starts will be “Dead Engine” with the rider sitting on the Gran Prix races can be excluded from this rule.
B. A banner or large flag must be used to start all (When the banner is raised, all engines must be shut off. When the banner is dropped, the race is started).
C. In the event there is an issue with the race starting after the starting banner has been raised, a red flag will be used to signify that the race will not The red flag will be used as a visual communication between the starting line and the starting banner and also a visual communication to the racers that the start of the race has been stopped.
D. In the event of a check being ruled unofficial, the promoting club will give tentative results to the riders, will hold the trophies and take no more than one week to determine the best and fairest method of scoring. Promoter will then provide determination to Sidra within that week.
E. All sponsor clubs will have verbal and visual communication between the starting line and where the starting banner is being dropped.

2. There must be a clearly defined start line between two definite (Stakes, etc.)

3. The sponsor club, at their discretion, shall start the A classes first, B second, Women and C A single or multiple wave start may be used if there is enough room to incorporate it safely.

4. No roads can be used to traverse the area between the start area and the trailhead, no matter how old the road Whenever possible, every club will incorporate into their start area a return course for safety sake, and it should be marked with a different color than the regular course markings.

5. For safety sake, mini bikes are never allowed on the big bike course at the same time the big bikes are The mini bikes can however, ride on the big bike course either before or after the big bike race.

6. All events must stipulate a definite finish line and must have a checkered flag to signify the end of the race.

7. Start, finish, and pit areas, must be clearly marked by continuous The finish area must be away from the pits and spectators, and must allow plenty of run out room. The sponsor club is always responsible for safe pits, starts, and finish lines.

8. Whenever possible, home check should be separate from the finish line for safety reasons.

9. All SIDRA courses will be closed to pre-riding 21 days prior to an Anyone caught pre-riding on a closed course will be disqualified. A club that promotes a European Scrambles may allow pre-riding on the day of the event only.

10. All SIDRA classes must be offered at any SIDRA sanctioned event.

    • If the event is a dual sanctioned event, e. AMA Hare and Hound, then it is acceptable to combine classes where a direct mapping makes sense.
      • For classes that do not map directly to AMA or other sanctioning body classes, e. bomber, the event must offer those classes independent of the other sanctioning body per SIDRA rules.
      • The mapping of classes MUST be provided to SIDRA at least 2 weeks prior to the event in a form conducive to being published on the SIDRA website.
      • In addition, the mapping should be published on the flyer or promoting clubs website. 


  1. The rider must be aware that they are responsible for their motorcycle to be in good safe operating condition, current ORV sticker, a good silencer and a USFS approved spark arrestor attached at all SIDRA sanctioned events. Based on requirements set forth by Idaho state law, all motorcycles starting in 2011 must pass a 96db +/- 1 db sound test before all sanctioned events. Any rule violations can be cause for immediate disqualification from any SIDRA event.
  • SOUND TEST - The db level of the muffler will be measured at a distance of 20 inches at a 45 degree angle from the end of the muffler and must not exceed 96db +/- 1db.

2. All protests must be given to the promoting club’s SIDRA rep in charge of the This can be done only by a member of the promoting club, or by a rider that participated in the event. No protests will be accepted from any other outside source. All protests must be filed within 30 minutes after the last rider finishes the event. All protests will require a $20.00 deposit at the time of the protest. If the protest is not upheld the promoting club will keep the money. Harassment of the referee may negate reimbursement.

3. All mechanical protests will require a $100.00 deposit and will be performed at a competent dealer shop of representative’s choice. If the protest is upheld the money will be refunded to the person that filed the protest. In such a case the protested party will have to pay the bill to get the bike back. If the protest is not upheld, the money will pay the bill and any left-over will go to the owner of the bike.



  1. All participants must have a membership card to receive points.
  2. Full membership:
  • $20.00 Rider gets a full one-year membership card.
  • This qualifies cardholder to accrue points toward the year- end awards and subjects cardholder to the rules in the SIDRA Rulebook.
  • Full membership cards will be available until the last race of the season.
  • Includes one transponder which the member is responsible to Replacement transponders are $5.00.

B. Non SIDRA card holders from other racing organizations will be eligible at the discretion of the points steward to enter the event, and:

  • Must buy a $5.00 day use card to participate in the event excluding minis.
  • In a dual sanctioned event only those riders using SIDRA scoring hardware will be required to pay the $5.00 day use fee.
  • All participants must sign the SIDRA liability release in addition to the promoting clubs release.
  • Are not eligible for year-end awards
  • Must obey all SIDRA rules
  • Must display the correct color number on the correct color background on all number plates.
  1. All SIDRA card holders are eligible to earn overall and class However, Any and All racers seeking year end awards for the current racing series, MUST belong to a SIDRA club in good standing.
    1. Although minis are encouraged to actively participate in a club they are not required to be a club member to be eligible for year end awards.
  2. All racers must present a current AMA Card to race in any SIDRA sanctioned If rider /racer does not present a valid AMA card, rider/racer must purchase a new one on site on the day of the event.
    1. Racer/Rider may purchase a one event pass the day of the event if they do not choose to purchase a full fee AMA Membership.
  3. May compete in only one class at a full point desert May compete in more than one class at a European Scrambles if you can qualify for one of the other classes and you have the correct colored numbers and plate for the class.
  4. May not trade bikes to finish or win any You must finish on the same bike you started on. (May be waived at some team events)
  5. You cannot ride a greater displacement engine in a smaller size, division or visa (For clarification, a division determines rider skill such as, A, B, C. A class determines whether you are Unlimited, veteran, senior, etc.)
  6. One person may ride in a class for points but it takes three riders to make a class for Riders from three separate classes may be combined for trophies as long as they are the same division. The sponsor may trophy all three riders at their discretion.
  7. All riders must sign an entry waiver at every race on race day.
  8. All riders must ride within the course markings, unless informed otherwise by the sponsor club at the riders (i.e., no passing zones)
  9. All riders must approach, pass through, and exit all checks in a safe manner.
    1. Safe is defined as:
      1. Slow down and be aware of your surroundings as you approach a check.
      2. Follow instructions from race workers.
      3. Exiting the area without spraying roost toward workers and equipment.
  1. Each rider is responsible for ensuring they receive a check mark at each check This includes electronic checks.
  • At manual check points the rider must come to a controlled stop to receive the check and only continue when signaled. 
  • At electronic checks including the finish line riders must pass through the chute in a “smooth” controlled manner without deliberately holding up other riders.
  • To ensure credit is received listen for the buzzer and look for your rider number on the reader board.
  • If there is any doubt that the system picked up your number pull ahead and to the side to ensure you get entered manually (it only takes a second)
  • If a rider continues without positive confirmation of being picked up by the system they risk losing that check/lap with no guarantee of it being recovered after the event.

 12. SIDRA promotes fair, competitive, and fun racing environments and expects all racers, pit crews, and other supporters to behave in a sportsman like manner.

  • Un-sportsman like behavior will be handled on a case by case basis.
  • Depending on  the  circumstances  involved  a  rider  may  be disqualified for 1 or more events.
  • The club promoting the event has the right to disqualify any rider as they see fit.
  • If a more severe penalty is necessary, which would include but is not limited to multiple race disqualifications, the circumstances of the event must be presented at a SIDRA meeting and an appropriate resolution will be voted on by all clubs present.
  • Any individual subject to a penalty has the right to attend the SIDRA meeting where the events in question are discussed and are encouraged to present their perspective of the circumstances.
  • Riders will be disqualified if under the influence of alcohol/drugs while competing in an event.


  1. Helmet, boots, eye protection, and protective pants and long sleeve jersey are required.
  • Throw away goggle film, “Tear offs” are not allowed at any SIDRA events.
  • If you line up on the start line with tear offs you will be asked to remove them or not participate.
  • If caught using tear offs after the start you will be disqualified.
  • Roll off systems are acceptable. 
  • This is required at all SIDRA events, including “park” races.

2. SIDRA uses electronic scoring at all events. All riders must have a SIDRA compatible transponder.

  • Each SIDRA membership includes one transponder. 
  • Non-SIDRA members will be required to purchase a transponder for $5.00 if they do not already have a compatible one. 
  • All riders are responsible for maintaining their transponder throughout the entire If it is lost or damaged a new one can be purchased for $5.00.
  • The rider is also responsible for carrying the transponder appropriately to ensure it will be read by the electronic The transponders currently in use are adhesive backed stickers intended to be placed on the underside of the helmet visor. Once stuck to the helmet they cannot be removed and re-stuck. Peeling the sticker will make them unreliable.


  1. There shall be four divisions: AA, A, B, and C.
  2. New riders will be classified by the SIDRA official in charge at sign-up. No SIDRA rider can be forced to ride the AA division.
  3. Any classification at sign-up is subject to re-classification.
  4. In the case of re-classification, the rider in question will be notified by SIDRA in writing and be issued a new card and number for the new class.
  5. All out of state riders that cannot show proof of classification must race the A However the SIDRA official in charge may use his better judgment in all cases.

     5. CLASSES:

    Riders must be a minimum of 14 years old to ride in the big bike race. Exceptions for riders between the ages of 12 and 14 must be addressed with SIDRA and the promoting club prior to the event.


    1. Mini Class A, B, “Girls”, and 65cc
    • Mini Bikes eligible for the 65cc and 50cc class must meet these requirements (max):
      • 65cc Class Displacement: 65cc (110cc four stroke)
      • 50cc Class Displacement: 50cc (78cc four stroke)
      • Front Tire: 14” Rear Tire: 12”
      • Wheelbase: 450”  Seat Height: 30.0”
    • Mini Bikes eligible for A, B, and "Girls" classes must meet these requirements (max):
      • Displacement: Up to 112cc 2-stroke or 150cc 4-stroke
      • Front Tire: 19” Rear Tire: 16”
      • Wheelbase: 52.0”
    • Age Limit for all mini classes
      • Up to 15 years old at first race of the season.
      • If a rider turns 16 during the current racing season they may finish the year in that division.
    • Any Mini caught riding in the pits while not racing will be disqualified.

    2. AA Class: Unlimited cc.

    3. Unlimited Class A-B: any size m/c 150cc or Rider must be a minimum of 14 years old.

    4. Lightweight Class A-B: 250cc or smaller. Any stoke.

    5. Veteran Class A-B (30+ years old) Unlimited cc.

    6. Senior Class A-B (40+ years old) Unlimited cc.

    7. Masters Class A-B (50+ years old) Unlimited cc.

    8. Bomber Class ten (10) year old or older bikes Heads Up

    9. Beginner Class C Heads Up

    10. Women’s Class A-B Unlimited cc

    11. Legends (60 + years old) Unlimited cc.

    12. Sportsman Class Heads Up.

    • Participants pay a reduced rider fee
    • Will run a shortened mileage Usually 50% of regular course
    • Trophies will be offered at the promoting clubs discretion.
    • Points will be paid to SIDRA card holders and numbers will be earned but no year-end awards will be given.

    B. Legends, Sportsman, and Women’s B are only required to complete 50% to i.e. 1 lap in a 2 loop race or 1 hour in a 2 hour event etc. If event doesn’t break evenly the promoting club defines how much of the course constitutes a finish.

    C. Trophies will be paid to the top 3 or 33% (whichever is least) to all classes excluding the AA Trophies for the AA division will be at the discretion of the promoting club. More awards may be given out at the discretion of the promoting club.

    D. The AA division will race for a cash purse and may be charged up to twice the normal stated entry fee for an The payout of the cash purse will be based on 50% of the entry fee paid in by participant.


    A. Numbers and letters are required on all number plates at all This includes events in which special numbers are issued for that event only. Failure to follow these requirements may result in disqualification.

    • Numbers MUST be displayed on ALL 3 plates
    • Numbers and letters MUST be legible and large enough to read.
    • Numbers shall be no smaller than 6 inches, and shall be consistent in height.
    • Letter shall be no smaller than 4 inches and must follow the assigned number. 
    • AA Riders – Red background/White number/Letter.
      • Unlimited A: (X)
      • Lightweight A: (A)
      • Senior A: (S)
      • Masters A: (M)
      • Vet A: (V)
      • Women A: (W)
      • Beginner: (C)
      • Bomber: (B)
      • Legends 60+: (R)
      • Lightweight B: (Y)
      • Masters B: (E)
      • Senior B: (F)
      • Unlimited B: (U)
      • Vet B: (T)
      • Women B: (L)
      • Sportsman: (Z)
    • Mini Classes White background with black numbers and the following letter designations.
      • Mini "A" (D)
      • Mini "B" (P)
      • Mini "Girls" (G)
      • Mini 65 (K)
      • Mini 50 (J)
    • Numbers are assigned on an earned basis to riders who have earned points during the past The Points Steward is charged with tabulating earned points during the season, and publishing final earned numbers at the end of each racing season.
    • SIDRA members seeking points must use their assigned SIDRA number at all events.
    • The only exception is SIDRA members who also have an earned NHHA number from the previous season are permitted to run that number at SIDRA Events. 

    7. POINTS


    1. A rider must participate at least 60% of the events in their For example in a 7 race season a rider must participate in 5 races to reach the 60% requirement. Participation will be defined as racing or working.
    2. SIDRA class points will be awarded based on class The top 20 AA/A and top 20 B/C riders will be scored in addition to their individual class standings. At each meet, the top twenty (20) overall AA/A and top 20 overall B/C riders will receive points toward the SIDRA high point A and B championships. SIDRA class and overall points will be based on the following point schedule.
    • 1st - 30
    • 2nd - 25
    • 3rd - 21
    • 4th - 18
    • 5th - 16
    • 6th - 15
    • 7th - 14
    • 8th - 13
    • 9th - 12
    • 10th - 11
    • 11th - 10
    • 12th - 9 
    • 13th - 8
    • 14th - 7
    • 15th - 6
    • 16th - 5
    • 17th - 4
    • 18th - 3
    • 19th - 2
    • 20th - 1

    i) In the event that there are more than 20 entries in any Each rider/racer will only receive 1 point for their finish in their class past 21st position

    ii) Only SIDRA members are included in the point payout for any event.

    Example: At a series meet, a rider may finish first in Unlimited A and third overall A. He/She would receive 30 points for the Unlimited A class win and 21 points toward the high point A championship. Similarly, a rider may finish fourth in Vet B and seventh overall B. They would receive 18 points in the Vet B standings and 14 points in the high point B standings.

    B. Ties are broken using the following criteria:

    i) Rider who has raced the most races that year will be declared the winner, unless the rider in question is a club member that has worked their club’s event(s) during that If this becomes the case, the club member will be declared the winner.

    ii) In the event there is still a tie then the number of first, second, third, , finishes will be compared until the ties are resolved.

    3. Team Events (Where team members ride together)

    a) Will be paid points determined by the promoting club and

    i) SIDRA strongly recommends that all points events be based on individual performance and only will allow flat pay point payouts under special

    ii) Every effort will be made to score team events such that individual performance can be used to determine earned

    iii) No single event can exceed 30 points per participant per

    iv) How many points will be paid and how they will be paid must be posted on the race

    4. You must complete at least 1 full lap (electronic checkpoint) to be considered a finisher and earn points.

    5. Work points will be awarded to club members who work their clubs events.

    i) You can only receive work points for one club during the year.

    1. If a club sponsors multiple events, members of that club ARE eligible for work points for each event worked and promoted by that

    ii) The amount of work points to be received will be based on the workers best individually contested race finish and will equal the workers highest overall finished race for the year.

    1. This excludes team races and any non-standard point events from being counted towards workers points, only individually contested races will

    iii)In order to be eligible for work points, your name must be on the Sanction Worksheet that is turned in to No names will be added to this list after the fact.

    6. Racer and worker points must be turned in to the points steward within 5 days after the event by the sponsoring club.

    7. Points will be updated online after all events.

    8. The overall points will be kept to establish high point A and B riders and high point club award.

    9. Mini classes will follow the same structure as the big bikes.

    10. Points associated with rider transfers.

    a) If a rider is moved up, they take all the points they have earned that year with them. 

    b) If a rider moves themselves up, they can only take half the points they have earned with them.

    c) If a rider changes class they can take no earned points with (i.e. – moving from Unlimited to Vet class etc.)

    11. In the event a rider is too slow or weather conditions or any other condition causes it, the sponsor club can stop the race after the leader has fi the event and place the rider in the finish position the rider would have attained had the rider been able to complete the whole event.

    12. At all dual sanctioned “National Events” only those riders signed up as SIDRA Members will be scored for SIDRA points.

    13. Riders drop their lowest point race for the season if the series starts with 8 or more races for the season.

    a) The 2018 race calendar includes 7 races so the drop race rule will NOT be implemented for 2018.


    A. The race committee and points steward shall reclassify riders periodically to ensure competitive racing within the classes. 

    A. Team races do not count as transfer rides. 

    B. If you place high in overall finish of different races you will be reviewed to be moved up.


    A. Check markings may be done using fender cards, punch cards, a strip of white adhesive tape on the helmet, but is left to the discretion of the promoting club to determine what works best for the day’s event.

    B. Main course – shall be marked in pink or orange Arrows and signs may also be used.

    C. Turns – shall be marked with yellow tape on the side of the trail in the direction the course is going to (If the tape is on the right side of the trail, the course is going to turn right, and visa versa.)

    D. Danger Areas – shall be marked with blue tape and/or X’s on pie plates or arrows pointed down at least one hundred fifty feet before the danger Extra dangerous areas need to have more marking than small danger areas do. Danger areas that must be marked are drop-offs, ditches, roads, rocky areas, sharp curves, and any other thing that could pose a life-threatening problem for the racer.

    E. In open terrain, each piece of flagging should be visible from the previous piece of flagging.

    F. In gullies with high sides, sand washes, and roads where course is obvious, the flagging does not have to be any closer than 200 yards apart.

    G. When a race course crosses a road there must be an adequate amount of marking on the other side of the road so that riders do not get lost. All road crossing must be marked as such.

    H. Riders must understand that in all cases cars have the right of way.

    I. All road crossing with traffic must have flagmen. All riders must understand that in most cases any road crossing with a flagman requires that you stop, get off your bike, and walk your bike across the road.

    J. Check points must be clearly marked and visible to the riders for at least 150 feet before they must stop. Secret checks designed to cut down on cheating may waive this rule.

    K. Electronic scoring will be maintained for a minimum of 2 hours after the winner crosses the finish or until all riders are in and accounted for, whichever is shorter. After the 2 hour cutoff the electronic system may be brought down at the discretion of the race referee and scoring personnel so results can be calculated and distributed in a timely manner for the majority of participants. Riders may still finish and earn series points after the cutoff but their finish time and sequence will be entered manually and published online with final results.

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