📅 Last updated on October 7, 2025
It must comply with the specifications of the model being raced.
Modifications that violate the specified rules are not allowed.
We recommend using plain water instead of coolant, as in the event of an accident, coolant may leak onto the track. Coolant can make the track slippery, which is dangerous for drivers and difficult to clean.
The following parts must be safety-wired for the race:
Left and right front brake calipermounting bolts
Oil sump bolts
Engine oil filler bolts
The chain should not be too loose or too tight.
The appropriate slack is usually 20-30 mm, depending on the motorcycle model.
Adjust the chain to be properly tensioned when a rider is on the bike.
Chain Guard It is required that the race bike has a chain guard to prevent accidents. The guard must be made of strong material that is not prone to cracking.
The race number must be placed on the front of the bike.
It is not allowed to place the number in other areas where it may not be clearly visible. Only stickers and numbers provided by the event organizer can be used.
The bike cannot display stickers from tire brands other than Pirelli.
Only Pirelli tires are permitted for display.
The bike must not have any modified fairings that could cause collisions or pose a danger to others.
Selfie stick-style cameras are strictly prohibited if they extend beyond the bike.
Black tape must be applied to the front and rear lights to prevent the glass from shattering and to reduce glare that could disturb other competitors. This also helps avoid confusion regarding light signals.
An oil catch tray or a fairing without holes must be installed to prevent fluids such as engine oil, brake fluid, or other liquids from leaking onto the track.
If a motorcycle fails the inspection, penalties will vary depending on the severity of the issue, such as:
⚠ Correction required before the race – For minor issues, the rider may be given a chance to fix the problem and return for re-inspection.
❌ Disqualification – For serious violations, such as illegal engine modifications.
🚫 Fines or additional penalties – May include point deductions, monetary fines, or suspension from future competitions.
📌 Correct method for stainless wire locking
1️⃣ Use the correct size of stainless wire
Typically, 0.8–1.2 mm wire is used, depending on the size of the bolt.
2️⃣ Drill a hole in the bolt head or lock (if not already present)
Some bolts may require an additional hole to allow the wire to pass through.
3️⃣ Thread the wire in a direction that keeps the bolt tight, not loosens it
Pull the wire tight and twist it in a direction that prevents the bolt from turning loose.
4️⃣ Wrap the wire 2–3 times and twist for strength
Use safety wire pliers to ensure the wire is tight and neatly twisted.
5️⃣ Check the wire’s strength before racing
The wire should not be loose or have any chance of slipping off the bolt
🟢 Green Flag – Indicates that the track is clear and it is safe to continue or start the race.
🟡 Yellow Flag – Indicates danger ahead. Slow down and overtaking is prohibited.
A fallen or broken-down vehicle is on the track, waiting for track officials to remove it.
In case of an accident at Point 3 (Points 3, 2, and 1 must wave yellow flags).
Debris on the track, such as parts scattered from a crash, or oil spilled on the track surface.
Track officials are on the track, for example, providing assistance or clearing vehicles from the track.
Note: Overtaking is prohibited during a yellow flag signal.
🔴 Red Flag – Indicates that the race must be stopped immediately.
Note: The race must be stopped immediately, and riders must return to the pit lane or starting line as instructed by track officials. Accelerating or overtaking on the way back to the safe area is prohibited. Wait for further instructions on whether the race will restart, count results from the completed laps, or be terminated.
🔵 Blue Flag – Indicates that a lapped rider must yield and allow the leaders to pass.
🏁 Checkered Flag – Indicates the end of the race. Riders must cross the finish line and then slow down to return to the pit.
All riders must study and strictly follow the flag signals. Violations may result in fines or penalties applied to race results according to the regulations.
If a race bike is leaking fluids or has loose parts that could endanger other riders, the flag marshal at each point will show a red flag to that rider. The rider must exit the track and stop in a safe area immediately. Failure to comply may result in penalties, deductions in race results, and/or fines as deemed appropriate.
At the end of each practice, qualifying, or race session, the checkered flag will be used to inform all riders at the finish line.During practice, qualifying, or race sessions, if the marshals show a red flag, riders must slow down, refrain from overtaking, and return to the pit lane. Failure to enter the pit may result in a fine of 2,000 THB per lap.
When the yellow flag is displayed, all riders must reduce speed and are strictly prohibited from overtaking until passing a green flag signal.
