The rules posted below are simply an excerpt from the rules page found here: Link
They are repeated here for clarity:
They are repeated here for clarity:
This section is to be considered an amendment to the UMRA Rule Book. All rules found in the rule book apply to the endurance race. In the event a conflict occurs between normal sprint race conditions and the endurance race rules listed here, the endurance race rules prevail. These rules are created to ensure a safe and fair competition. UMRA Race Direction reserves the final say in any rules, penalties, or necessary action.
All racers, pit crew, and supporting guests are responsible for familiarity with these rules. Any racer, pit crew, or supporting guest (henceforth referred to as “Your Team”) found in violation of the published rules will incur the same warnings and penalties.
Teams registering for an endurance event must be on a machine that fits within the following classes:
Bikes allowed: Honda NSR50, everything must remain stock*, Yamaha YSR50, aftermarket carbs & exhaust are allowed. May also run 12” wheels. Suspension springs may be replaced but the internals must remain stock. Controls such as pegs, rear sets, throttle tubes, etc. May also be changed. Bodywork and gearing may also be changed.
Bikes allowed: Max displacement of 63.9cc (2 Stroke) & 128cc (air cooled 4 Stroke). Engine mods are allowed.
Bikes allowed: GP or Motard frames, max displacement of 65cc (2 Stroke) & 150cc (air cooled 4 Stroke)
Super Street 125:
Bike allowed: Must be a Street Legal 125 with stock bore, head, cylinder, fork tubes and frame. No forced induction allowed. ECU plug ins (I.E. Power Commander and similar products) are allowed, however ECU must remain stock.
Thunder Bike (spec class):
Bikes allowed: Stock XR100 & Stock TTR125. XR’s can swap the front wheel only to a 16”, Only control mods are allowed (pegs, rear sets, handle bars, etc.). Suspension springs may be replaced but the internals must remain stock. Controls such as pegs, rear sets, throttle tubes, etc. May also be changed. Bodywork and gearing may also be changed.
We offer the option to add additional classes if there are three or more teams to registered to compete in that class. For example, if you are able to field three teams to compete in a class, which is not listed above, we will add that class. Please note that the machines in the proposed additional class must fit within the performance range of the NSR50 at the low end, and a 65cc two stroke/128cc Four stroke at the high end. No CRF50’s (or equivalent machines). The goal of this is to limit closing speeds to a safe level. If your team wishes to add an additional class, but by the registration deadline there are not 3 teams registered, you will be bumped up into the nearest performing class.
The deadline for adding new classes is two weeks before the event
24 Hour Registration: Registration will be limited to the first 30 teams signed up. In order to register your team, a minimum of 4 paid racers must be signed up. Registration cost is $120 per racer. Team Captain must also be designated at this time, all communication with UMRA staff will go through the Team Captain.
All Endurance Series Events: Transponders will be required for endurance races. Transponders are available to rent. If you are bringing your own transponder, you are required to register the transponder with UMRA staff by the close of registration (before race day) and you are responsible for making sure your transponder is charged and in good working order. UMRA will not issue refunds in the event your personal transponder malfunctions, though we will offer the option to rent mid-race (previously recorded laps will add to your team’s count but no laps will be honored that were not recorded).
24 Only: The option to add additional classes expires at Noon two weeks before the race. If there are not enough teams to add the class, your team captain will be informed of the class your team will race in no later than 5pm on that day.
We will offer a wait list if the maximum number of teams has been reached. This maximum may vary by track and event. The Team Captain may submit his or her team for the wait list.
24 Only: There is a maximum number of 10 riders per team. The minimum number of riders required is 4. There is no limit on pit crew. Your team captain can submit roster changes as many times as necessary up until the registration deadline, but there must be a minimum of 4 riders registered at any given time to keep your position.
Other Endurance:There is no team minimum or maximum. Your are encouraged to utilize a pit crew for all endurance racing.
All Endurance Racing: Selection of pit spot will be determined by registration order.
Rules specific to endurance races (pit limits, crashing, etc).
Regarding all rules, whether specifically mentioned or implied, any penalties are at the discretion of race management. UMRA staff will issue a warning for the first offense, and the next offense will be met with lap penalties. It is impossible to foresee every circumstance that may occur during a race, judgment will be made in the interest of safety and fairness. Race direction reserves the right to issue any penalties (with or without warning), including lap penalties but up to disqualification from the race depending on the severity of the infraction. Be advised that any lap penalties issued will be significant, especially if a warning for the same offense was issued.
Your team is responsible for the behavior of any racer, pit crew, or guest supporting your team. Any behavior deemed by staff to be unsafe, unsportsmanlike, or inappropriate will assess a penalty to your team. For the purpose of these rules, all of the above involved parties will be referred to as “Your Team”, or “team members”.
If your team is found to impede race traffic in any way, whether it is on track or in the pit, your team will be penalized. The pit lane is reserved for race traffic only. It is not to be used as a sidewalk or social area. Extreme caution must be exercised when crossing the pit lane for any reason.
Speed limit in the pit is 5 MPH. First infraction will be met with a warning. Additional infractions will be assessed a 5 lap penalty. It is impossible for UMRA staff to catch every infraction, it is the intention of this rule for the pit to be self-policed. If you feel as though another team is guilty of unsafe speed in the pit, inform a staff member. An infraction must be witnessed by staff for a warning or penalty to be applied. Video evidence will be sufficient proof in lieu of a staff member witnessing it.
There will be a designated area in which your team can communicate with the rider on track. Any team found communicating with their rider outside of the designated area will be assessed a penalty.
No team member is permitted on track under any circumstances. Only active racers are allowed on track.
Alcohol consumption and smoking are not permitted in the pit area for safety reasons. Any team member who has contact with the bike is not permitted to consume alcohol or other impairing substances until they have retired from the race. Smoking is permitted outside of the pit area, please be respectful and clean up after yourself.
Each team will be designated a pit spot selected by their team captain, based on registration order. Each pit space will be clearly marked. Your team, any additional machines, tools, etc. must fit within your pit space. There are no support vehicles allowed in your pit space. Racer and spectator parking is available on a first come first serve basis, and due to the limited parking at most tracks it is strongly advised to carpool as much as possible and avoid bringing unnecessary vehicles.
Each pit space is required to have at least one full, working fire extinguisher easily accessible in their pit at all times.
Any bike that crashes must come in immediately to be re-teched whether or not any damage has been sustained. Stay off the race line and safely exit the track.
REQUIRED LIGHTING (night racing):
All bikes are required to have a visible, bright red light on the tail of their bike from sundown to sunrise. Any team found to have a non-working, non-visible, or dull light will be black flagged, and must come into tech. The light source must be securely fastened to the rear of the bike and visible to both other racers and race direction. A fresh red glowstick may be used, however if it becomes too dim it must be replaced immediately (you should expect to go through several as they only remain bright enough for 1-2 hours). We recommend using a bicycle light. If your bike comes with a tail light, this will suffice, but the brake light function must be disabled. The tail light must be taped with clear tape. Any light lenses (whether a bicycle light or tail light) must be “safety taped” with clear packing tape to ensure the lens doesn’t shatter. Any headlights must be completely disabled, and lenses must be taped.
Each team is allowed to have one full spare bike in their pit (and unlimited additional spare parts). Any part on the race bike may be swapped out (motor, rearsets, wheels, controls, etc), but the original frame must be used. Under no circumstances is a team allowed to use a different frame than what they started the race with.
All normal class and tech inspection rules apply.