BMB/ACU  Championship Regulations 2026

1.1 Eligibility

All competitors must hold a valid competition license for Road Racing or Mini Bike / Pocket Bike Racing issued by the Auto Cycle Union.

1.2 Categories

SEE INDIVIDUAL CLASSE SUPPLEMENTARY REGULATIONS

2.1: Protective Clothing

1. Protective Clothing Mini Moto Riders:

One-piece leather race suits or proprietary Mini Moto race suits are acceptable for

Junior Riders.

A back protector must be included in the suit or worn separately.

2. Protective Clothing Juniors & Adults:

One-piece leather race suits only. A back protector must be included in the suit or worn separately.

3. Race Boots:

Must be made of leather and adequate ankle protection. There must be no gap between the top of the boots and the bottom of the race suit when in a riding position.

Trainers/ Trainer boots will NOT be allowed.

4. Condition of above:

Must be in good condition with no rips, tears or visible holes. Holes must be repaired professionally and not with tape.

2.2: Jewellery

1. It is recommended that all body piercing, studs, rings, etc. are removed.

2.3: Helmets

1. All competitors must wear a Helmet bearing the current ACU gold stamp and in sound condition

2. Helmet must be properly fitted to rider’s head whilst practicing and racing. Overseas riders may use helmets as approved by their own FMN.

2.4 Identification Discs

1. While practicing and racing, riders and passengers are required to wear an identification disc around the neck, attached by a material approved by the technical officer. Thin chains should be avoided. The disc must be permanently marked with the wearer’s full name and date of birth. Identification discs shall be of a durable material, circular in shape, between 20mm and 25mm in diameter and having rounded edges with no sharp or ragged projections.

3.1 Mini Moto Specifications

1. Wheelbase – 730mm Maximum

2. Length – 1060mm Maximum

3. Saddle Height – 450mm Maximum

4. Total Height – 620mm Maximum

5. Footrests – Non-Folding 60mm minimum Plastic or Rubber Round Tipped. A Tolerance of 5% Minimum Tip is allowed.

6. Clutch – must be dry centrifugal clutch keyed into the crankshaft.

7. Start – The Engine must have a recoil pull starting device fitted.

3.2 Mini GP / Mini Bike Specifications

1. Wheelbase – 1550mm Maximum

2. Length – 1950mm Maximum

3. Saddle Height – 870mm Maximum

4. Total Height – 935mm Maximum

5. Footrests – Non folding or folding 60mm, Minimum Plastic or Rubber Round Tipped. A Tolerance of 5% Minimum Tip is allowed.

3.3 Carburettors

1. SEE INDIVIDUAL CLASSE SUPPLEMENTARY REGULATIONS

3.4 Spark Plugs

1. No Restrictions but must be “R” (Resistor) type to prevent interference with transponders used for timing.

3.5 Fuel

1. Only unleaded fuel, that can be obtained from a roadside petrol Station can be used. Max 99 Octane.

3.6 Kill Switch

1. A kill switch must be located on the handlebars adjacent to the headstock. The Kill switch must be fully functional.

3.7 Coolant

1. Water Cooled Engines: Water with no additives is the only coolant permitted in water-cooled (LC) engines.

2. Oil Coolers - Pit Bike Engines: Pit bike engines are permitted to use oil coolers.

3.8 Oil & Coolant Containment

1. All 4-stroke machines must be fitted with either a metal catch tank mounted below the engine or, for machines fitted with a full fairing, a catchment “tray” constructed in the lower cowling to hold 1.5 times the volume of the engine oil capacity. This can be the belly pan of the fairing as long as there is no holes and has a drain bung fitted.

2. Oil lines containing positive pressure must be of metal or metal-reinforced construction, with swaged or threaded connectors. All connector bolts, drain, and filler plugs must be tight and drilled, and wired into position.

3.9 Wheels

1. Mini Motos – Any make of wheel is permitted. The diameter of the wheel and tyre is 6.5 inches maximum. The width of the wheels is 110mm maximum.

2. MiniGP / Mini Bikes – Maximum 12″ unless restricted in supplementary regulations for a class.

3.10 Tyres

1. Mini Motos – Any make of tyre, slick or treaded is permitted unless restricted in supplementary regulations for a class.

2. MiniGP / Mini Bikes – Any make of tyre, slick or treaded is permitted unless restricted in supplementary regulations for a class.

3.11 Brakes

1. Cable or hydraulic-operated brakes are required on both front and rear wheels and must be able to be operated independently.

3.12 Transmission

1. By chain with any ratios. A chain guard must be fitted in such a way as to prevent trapping between the chain run and both the front and rear-driven sprockets. A shark fin chain protector should be fitted to the rear of the machine where possible.

3.13 Exhaust

1. Make / type as per event and individual class supplementary regulations with noise control restrictions (see below)

3.14 Noise Control

1. The maximum permitted level will be as specified by the circuit used. In general, this will be 98Dba measured at a specific location on the circuit.

3.15 Bodywork

1. Mini Motos – Fairing and Streamlining are permitted. Covering of the headstock is compulsory.

2. MiniGP – Must use full fairing as per original manufacturer specifications. Copies of all original bodywork permitted (unless prohibited in specific class supplementary regulations)

3. Mini Bikes – Side Panels, Seat Cowling and Number Boards must be fitted securely with no sharp edges.

3.16 All Bikes must be fitted with the following:

1. BOBBINS – Drilled Axles with Crash Bobbins firmly fitted. (you can attach bobbins to the Fork Legs or Attached to the Swing Arm but they must be firmly in place and in a position that stops the axles from digging into the track surface in the event of a crash.)

2. KILL SWITCH – All bikes must be fitted with a WORKING Kill switch to the LH Side Handle Bar (except the Ohvale 110 cup class which must be on the RH Side as stated in the Ohvale European regulations).

3. RACE NUMBERS – The CORRECT race number for the rider must be always displayed to both the front and the sides of the motorcycle. The numbers MUST be a single colour and in strict contrast to a single colour background and be clearly visible. They must be a minimum size of:

a. FRONT numbers are: Background 285mm by 235mm Height of figure 140mm – Width of figure 80mm – Width of stroke 25mm – Space between two figures 15mm.

b. SIDE numbers are: Background 260mm by 220mm Height of figure 120mm – Width of figure 70mm - Width of stroke 25mm – Space between two figures 15mm.

4. NYLON BAR ENDS – All Mini GP / Mini Bikes / Mini Motos must be fitted with Nylon ends to the handlebars.

5. SUMP PLUGS – All Bikes must be fitted with a drilled sump plug that must be lock wired in place.

6. OIL FILLER CAPS – All bikes must be fitted with a drilled oil filler cap that must be lock wired in place.

7. NYLON PEG ENDS – All Mini GP / Mini Bike Style & Mini Moto bikes must be fitted with Nylon Foot Peg ends with NO metal bolt or edge able to contact the Tarmac in the event of a crash.

8. OVERFLOW / BREATHER PIPES – All overflow and breather pipes must end in a suitable plastic or metal container such as a small drinks can. This must be firmly attached to the frame of the bike and must be sealed.

SPECIAL NOTE:

ONBOARD CAMERAS – As of 2017 onwards ALL onboard cameras must be fixed securely to the bike and CAN NOT be worn on the body or helmet. This is a stipulation direct from the Permit Issuers and has also been requested by the Insurers. Please make sure the camera is fixed in place before you take your bike to the safety inspection area.

*under review*

5.1 MEDICAL SERVICES. MINIMUM REQUIREMENTS FOR MINI BIKE MEETINGS

The minimum requirements for practice or racing to commence are as follows:

1 Doctor and 1 Paramedic, 2 Ambulances with 2 Ambulance Technicians

If one Ambulance has to leave the venue for any reason, the event can continue provided that there are a minimum of 1 ambulance, 1 Doctor & 1 Technician present and available.

Whenever possible a First Aid Technician and a second Ambulance should be made available.

Ambulance

A vehicle registered as an ambulance with the DVLA (Driver and Vehicle Licensing Agency) and registered with CQC if appropriate.

An ambulance must have an appropriately qualified driver to transport a casualty under blue lights. It must be equipped with the FIM minimum equipment regulations for a type C vehicle; that is:

Medical: A stretcher (preferably standardised), oxygen supply, apparatus to immobilise limbs and vertebral column. First aid medicaments and materials.

Technical: Radio communication. Visible and audible signals.

Staffing: An ambulance must be staffed by two First Aid Personnel (who can be the two minimum First Aid personnel).

An ambulance may act as a Medical Centre BUT if so it must be a vehicle in addition to the minimum ambulance requirements and must not be allowed to leave the circuit.

First Aid Personnel

A person holding a current certificate of First Aid competency. (Where an event is open to the public event organisers should ensure that all First Aid personnel are insured against malpractice for the event concerned).

Special Notes

The minimum medical requirements specific for this discipline also apply to associated Test Days.

Concussion/Suspected Concussion

If a competitor is involved in an incident that results in him/her being diagnosed by the Medical Officer/Paramedic as suffering from concussion/suspected concussion, the rider is not permitted to participate any further in that event. Organisers are to notify ACU Head Office as soon as possible of any concussion/suspected concussion injuries and then will subsequently:

a) Place the rider on the ACU Stop List

b) Inform Organisers of forthcoming events that the Rider has suffered a concussion/suspected concussion injury and is therefore placed on the ACU Stop List

c) Inform the Rider that he needs to see a Doctor and obtain a letter/doctor’s certificate that confirms he is fit to resume competitive racing/participate in a practice/test session.

The recovery time for anyone diagnosed with concussion/suspected concussion is as follows:

a) Over 20 years: Excluded immediately and suspended for a period of nine days.

b) 16–19 years: Excluded immediately and suspended for a period of twelve days.

c) 15 and under: Excluded immediately and suspended for a period of twenty three days.

The rider is not permitted to ride during the obligatory suspended periods outlined above and then only once he/she is in possession of a doctor’s certificate/letter after the suspended period has expired. A rider may be signed off to ride by the CMO at an event once he has observed the obligatory suspended period outlined above.

If a competitor has been injured on a Saturday and is suffering from concussion/suspected concussion, and the Organiser is aware that the rider was intending to ride or is scheduled to ride somewhere else the next day, the Organiser will inform the Organiser of the event being held the next day so they are aware of the rider’s injuries and as such he is prevented from participating in that event.

6.01 CHAMPIONSHIP STATUS

The Championship will be held under the auspices of the ACU Ltd.

6.02 CHAMPIONSHIP ROUNDS AND VENUES

There will be a minimum of 5 two day events between March and October.

6.03 CIRCUITS

The circuit should be inspected and approved by the ACU Track Inspector. The minimum width should be 6 metres. The minimum length should be 500 with the maximum length to be set at the track inspection.

6.04 GRID AND STARTING NUMBERS

The grid should be set out during the track inspection, but should in principle be a 3 × 3 or 2 x 2 solo grid with 6 metres between each staggered rider. In principle the grid capacity should be a maximum of 28 machines with a 50% additional allowance for qualifying or practice unless the ACU Track Inspector sets a lower limit during the inspection.

6.05 PRACTICE AND QUALIFYING

There will be a minimum of 15 minutes of practice/qualifying allocated to each class at each event. Participation in these sessions is compulsory for a minimum of 3 laps. On the 2nd day of a two-day meeting, a minimum of 8 minutes of practice must be made available to every competitor. Participation in the 2nd day free practice is not compulsory.

Testing or practice at the same venue is prohibited for the 72 hours preceding each championship round unless specified in class supplementary regulations.

Each grid will be set based on lap times recorded during each qualifying practice.

6.06 CHAMPIONSHIP LICENCE

An ACU Mini/Pocket-Bike Championship Licence will be required in order to take part in the series.

6.07 COMPETITOR TRAINING

As this is an entry-level to tarmac racing, no previous competition experience is required, but every competitor must attend a rider’s briefing and induction course before participating in their first event. Once the induction course has been received, a validation sticker will be added to the back of the competitor’s ACU Licence.

6.08 CHAMPIONSHIP POINTS

Points will be awarded for each championship race on the scale 25.20.16.13.11.10.9.8.7.6.5.4.3.2.1. If at the end of the season, there is a tie on the points then the highest number of wins will determine the winner, should that be equal then the 2nds, 3rds, etc will be taken into account until a winner is established.

7.01 Authorisation & Permits

The 2026 BMB Road to MotoGP events will be authorised and permitted by the ACU.

8.01 – Two Day Event Each class will follow one of the following formats based on registered rider feedback and will be published in the final instructions for each event.

Format 1

DAY 1

07:00 - Rider Sign On:

Please attend race control to sign the sign-on forms, present your license for inspection, and collect your hire transponder if applicable.

07:00 - Technical Inspection:

Please take your bike and kit to the inspection area (usually in the pit lane entrance). The Technical Inspectors will check your bike and kit to make sure that it meets the basic requirements.

They will issue you with a sticker that must be displayed on your vehicle throughout the event.

*Please note if you do not have your full kit with you will not pass inspection and may have to queue up again.

08:00 to 08:45 - Compulsory Riders Briefing:

ALL riders must attend a compulsory rider briefing. The time slot allocated for your class will be shown in the final instructions for the event.

09:00 First Practice sessions commence:

Each class will have two practice sessions before the Marshall’s break.

13:00 (Approx) Qualifying:

Each class will have a Qualifying session; the time set will be used to formulate the grid for Race 1.

15:00 (Approx) Race 1:

This will be a Sprint race and the number of laps based on the circuit size and weather conditions

DAY 2

09:00 Morning Warmup:

Each class will get a warmup session

11:00 (Approx) Race 2:

The Grid position for Race 2 will be taken from your fastest time set in in Race 1. The number of laps will be based on the circuit size and weather conditions

14:00 (Approx) Race 3:

The grid position for Race 2 will be determined by the fastest time set in Race 2. The number of laps will be based on the circuit size and weather conditions

Pit Lane Will Close after the last Race of the Day

Format 2.

DAY 1.

07:00 Rider Sign On:

Please attend race control to sign the sign-on forms, present your license for inspection, and collect your hire transponder if applicable.

07:00 Technical Inspection:

Please take your bike and kit to the inspection area (usually in the pit lane entrance). The Technical Inspectors will check your bike and kit to make sure that it meets the basic requirements. They will issue you with a sticker that must be displayed on your vehicle throughout the event. *Please note if you do not have your full kit with you will not pass inspection and may have to queue up again.

08:00 to 08:45 – Compulsory Riders Briefing:

ALL riders must attend a compulsory rider briefing. The time slot allocated for your class will be shown in the final instructions for the event.

09:00 First Practice sessions commence:

Each class will have two practice sessions before the Marshall’s break.

13:30 (Approx) Qualifying sessions Commence:

Each class will have 2 Qualifying sessions, the fastest time set over both sessions will be used to formulate the grid for Race 1.

DAY 2

09:00 Morning Warmup:

Each class will get a warmup session

11:00 (Approx) Race 1:

The Grid position for Race 1 will be taken from your fastest time set in over both Qualifying sessions. The number of laps will be based on the circuit size and weather conditions

13:45 (Approx) Race 2:

The grid position for Race 2 will be determined by the fastest time set in Race 2. The number of laps will be based on the circuit size and weather conditions

15:00 (Approx) Race 3:

The grid position for Race 13will be determined by the fastest time set in Race 2. The number of laps will be based on the circuit size and weather conditions

Pit Lane Will Close after the last Race of the Day

DYNO TESTING LEVELS FOR 2026 SEASON

After extensive testing and data acquisition by ourselves and the official BMB Dyno operator, we have formulated the following bhp and torque allowances that we feel are fair for each of the controlled classes.

The testing procedure developed allows for all riders to be tested quickly in a like-for-like manner incorporating settings that make allowances for differing gear ratios, wheel sizes, tyre pressures, and atmospheric conditions.

Because of the nature of all the variables that are involved in Dyno testing, not excluding the different makes in testing equipment, all Dynos will read differently when testing the same machinery and, in some cases, quite dramatically.

However, by using the same equipment and type of tests at each event we can establish what is determined as a max level for the controlled classes we run when tested on the same settings.

To be deemed compliant your engine must not exceed the following maximum output levels for your class.

Tolerances:

For the 2026 season, a “tolerance” has been added to BHP testing limits to account for minor dyno fluctuations and ensure fairness. Engines must be set to the Max BHP limit, not the tolerance.

If post-race checks find your machine outside the tolerance buffer, you will be suspended from this and previous races for this event only.

To compete in future races, your machine must be rechecked and shown to meet the power limits.

Please Note:

Allowed modifications to your engine or carburettor might push your output over the limit, risking exclusion.

As a result, if you plan to make these changes, we highly recommend having your bike checked with a basic power run by The Official BMB Dyno—either before the event or at the track—to ensure your engine remains within the required limits.

You are responsible for ensuring your engine meets all requirements. Setting limits is reasonable since everyone shares the same goal: affordable, fair, and enjoyable competitive racing.