Official Ultra4 vehicle numbering, identification and Shark Fin requirements for all competition vehicles.
Section 2.3 • Common Vehicle Requirements
2.3.1
All vehicles in competition must be identified with the correct entrant number.
2.3.2
Entrant numbers shall be composed of a combination of the digits 0 through 9 only.
2.3.3
Entrant numbers shall be assigned annually to Drivers of Record on a first-come, first-served basis. In the event of a conflict, seniority based on the date on which the Driver of Record first competed in an Ultra4 event will determine the outcome, with OG13 having first right, 2008 King of the Hammers second right, and so on.
2.3.4
Vehicles must display entrant numbers on the front, both sides and rear of the vehicle. Any number location deemed by Ultra4 to be too difficult to read must be changed before the vehicle is allowed to compete.
2.3.5
Entrants are advised that checkpoint staff will not allow vehicles to continue after stopping until entrant numbers have been verified.
2.3.6
Ultra4 reserves the right to require race vehicle numbers and/or background colors to be changed.
2.3.7
Ultra4 assumes no responsibility for scoring vehicles with unrecognizable numbers. It is the driver's responsibility to maintain entrant numbers in a recognizable condition.
2.3.8
All four-wheel vehicles must utilize a Shark Fin style number plate located behind the B-pillar and offset in from the side panels of the vehicle to protect it from mud. In addition to the Shark Fin, all vehicles must have one front-facing and one rear-facing number plate using the same color combination as the Shark Fin.
2.3.9
Shark Fin numbers must be 7 inches (175 mm) tall with a 1-inch (25 mm) brush stroke in Arial Narrow font only. Front-facing and rear-facing numbers must be 6 inches (150 mm) tall.
4400 Class – Black numbers on a white background
4500 Class – Black numbers on a PMS 151 C (Light Orange) background
4600 Class – Black numbers on a PMS 2707 C (Light Blue) background
4800 Class – Black numbers on a PMS 101 C (Yellow) background
4900 Class – White numbers on a black background
The National or European Class Champion may use white numbers on a PMS 485 Red background.
2.3.10
All competitors registered in the Rookie Program are required to run a red number (PMS 485) with a white ¼-inch outline.
