Stock Rules

1)	ROLLCAGE
	Roll cages shall be at least 1 inch .062 wall thickness, or 1 1/8 inch .065 wall thickness, or
	1 1/4 inch .065 wall thickness. Roll cage shall be made of chromoly steel or equivalent material.
	The front section of the cage shall be no further back than the steering wheel. Roll cage shall
	have sufficient fore and aft bracing and strength to support the weight of the car & driver in case
	of an upset. Cage shall have gussets at the intersecting bars to the uprights. Bends must have at
	least 3 inch radius. No square or pointed corners allowed. Roll cage must be a minimum of 3 in
	above the drivers helmet. It is mandatory to install a cross brace behind the seat to support the
	shoulder harness.

2)	BUMPERS and NERFS
	Car must have bumper extending beyond the front and rear tires. Nothing may extend beyond a
	tangent line from the outside edge of the tires to the bumpers. Nothing may extend beyond the
	outside edge or the tires or wheels, whichever is the widest. No sharp corners or design as to hook
	or damage. All cars must be equipped with nerfing bars. Nerfing bars must extend to inside edge
	of tires, but not beyond the outside of tire.

3)	SAFETY
	Seat belts must be securely attached to the car and used at all times. Metal to metal latches only.
	5 point seat belts, shoulder harness and sub strap are required. Belt dates must not be over three
	years old. (Example: Oct 07 may be used in 2008, 2009 and 2010.) Arm restraints are mandatory
	and must be adequately adjusted to keep the drivers hands below the top of the roll cage. Helmets
	must be full head coverage competition type and one of the three latest SNELL approvals. All
	drivers will wear a name brand flame-retardant uniform. Neck braces, cage nets and/or head and
	neck restraints are mandatory. SFI gloves are mandatory for safety.

4)	ELECTRICS and ELECTRONICS
	On and off switches must be on dash, top of the cowl or on steering wheel. On/off switch must be
	connected and functional. No radio communication is allowed with the car or the driver.

5)	BATTERY
	All wet cell batteries mounted in the cockpit must be covered and vented outside the cockpit area.

6)	FUEL
	Cars may run gasoline or methanol. Performance enhancing additives are prohibited.

7)	WEIGHT
	Minimum car and driver weight 750 lbs.


8)	SUSPENSION
	Tread: Maximum 63 in. outside to outside of rear tires. Minimum 32 in. center to center of tires.
	Wheelbase: Maximum 70 inches. Minimum 50 inches, center of front axle to center of rear axle.
	Steering: Front wheels must be connected by a solid or tubular tie rod. Rear wheel drive only. All
	suspension bolts except wheel nuts must be secured by some type of locking device.

9)	BRAKES
	Brakes will be of sufficient strength so as to slide the wheels while the car is in motion at any given time

10)	BODIES
	Tail sections must be in place for time trials and all races. There must be a metal firewall between
	driver and engine, made of 24 gauge steel or .050" aluminum. Body of car must be made of aluminum,
	metal, fiberglass or high impact plastic. No rear view mirrors. The only part of the car allowed to be
	dismantled for driver to enter or exit is a quick release steering wheel hub. The minimum opening on
	the right side of the car will be 14” from the top of the roll cage to the top of the mud guard or sissy bar
	and 16” minimum from the front down tube to the back. All mechanically operated devices must be
	mounted below the drivers shoulders for safety. All fuel tanks must be equipped with a one-way check
	valve designed to prevent the spillage of fuel from the fuel tank vent in the event of a rollover.

11)	TRANSMISSION
	Any car equipped with a shifting mechanism must have this device mounted in the drivers compartment.
	Shift levers may mounted outside the drivers compartment on opposite side of car from the chain drive.
	Chain guards will be made of .090 inch thick aluminum or equivalent and will run on top of chain from the
	front of the front sprocket to the center of the rear axle. Driver must not be able to touch the chain or
	sprockets while sitting in the cockpit.

12)	NUMBERS
	All cars must have legible numbers painted in contrasting colors on both sides of car and the nose.
	Minimum height of numbers is 8" on the nose and nose wing, 10" on each side of the tail and 12" on
	the wing. Numbers must be separated from advertising so they will be readable. No gold or silver
	leaf or prismatic numbers will be allowed on the cars. Non-wing cars must have car number on the nose.
	Remember: The easier your numbers are to read, the easier they are to score!

13)	BALLAST
	Any material used for ballast must be firmly attached as a part of the car's structure. No liquid or
	loose ballast such as water, fuel, oil, sand bags, rocks, log chains etc. allowed.

14)	STAGING AREA
	Once a car enters the staging area it is considered race ready. No legality changes may be made.
	If a car is not legal once it reaches the staging area it will be disqualified for that specific event.

15)	SELF STARTING
	All cars must be self starting. Any car requiring a push vehicle from the staging area will start at
	the tail of that race.

1)	AGE
	Drivers age 14 and up may compete in the Stock Class. You may compete at age 12 if you have
	competed for 2 prior years in the Restricter Class.

2)	SHOCKS
	Any shock absorber legal, except no cockpit adjustable shocks.

3)	TIRES and WHEELS
	Any wheel size and tire combination may be used, but tires may not exceed 22 1/2 inches in height.
	Wheels must be held on with 4 or more standard lug nuts or knock-off hubs. Right rear tire must be
	a minimum 50 durometer compound Hoosier or American Racer tire, plated NMMA. Tire may be
	be siped or grooved. Tire durometer check should be done at least 15 minutes after the races to
	allow for cool down.

4)	WINGS
	Cars must run a 10 square foot maximum top wing with a one piece center section (no multi stage
	airfoil wings allowed). Airfoil must be parallel with roll cage and no offset sideboards (front to rear).
	No Twisted wings. Sideboard right side, maximum 18” tall x 48” long. Sideboard, left side,
	maximum 24” tall x 48” long. No mechanical, electrical or hydraulic adjustments are allowed in the
	cockpit area. Wing must not extend beyond tires as driven. Nose wings optional. If a nose wing is
	used, the center section may not exceed 18” x 24” with sideboards no larger than 9” tall x 21” long.

5)	STAGING AREA
	Once a car enters the staging area it is considered race ready. No legality changes may be made.
	If a car is not legal once it reaches the staging area it will be disqualified for that specific event.

6)	COCKPIT ADJUSTMENTS
	Functioning cockpit adjustments are NOT allowed.

7)	SELF STARTING
	All cars must be self starting. Any car requiring a push vehicle from the staging area will start at
	the tail of that race.

8)	ENGINE RULES
	4 cycle multi-cylinder engines not exceeding 600cc with stock bore & stroke with charging unit.
	Valve jobs will be allowed as long as they are within mfg. tolerance allowance. Any air cleaner will
	be allowed. Any exhaust will be allowed. Crank case ventilation to atmospheric pressure only is
	allowed.

	Carburetors must be OEM Production Motorcycle, CV style. No Flatslides or Lectron style
	carburetors allowed. Carburetors may have metering rods, jets and springs changed to tune fuel
	curve to match the car requirements. TPS sensors not required. Any motor sprocket
	(520 or 530) is allowed. Outer cosmetic changes will be allowed to mount the motor in the car
	(i.e. cut part of the engine off to get it to fit, relocate oil pan drain plug, etc.).

	Engines running Fuel Injection
	Fuel Injected engines are allowed. Engines must run Stock Airbox (aftermarket washable
	replaceable filter allowed) and all original injectors intact and functional. Oil pickup modifications
	are allowed. Outer cosmetic changes will be allowed to mount the motor in the car (i.e. cut part
	of the engine off to get it to fit, relocate oil pan drain plug, etc.). Unaltered stock OEM CDI black
	box only. Powercommander module allowed to tune fuel map only. No modules that allow
	ignition remap. Fuel injected cars must run gasoline.

	Fuel Injected Engines running Carburetors
	Engines originally equipped with Fuel Injection are allowed with any OEM production Motorcycle
	CV Style Carburetors and aftermarket filter boxes. Must run same make as motor. Interchanging
	of Injected and Carbureted cylinder heads is allowed. Engines must be run with the OEM/Stock
	Ignition system from either the carbureted or injected engine, using the unaltered, stock,
	Motorcycle OEM components. No MSD, MoTec, Tec3, or any other aftermarket ignition systems
	allowed. CDI black box must be stock and unaltered.

Engine Tech Items
	Stock bore & stroke - 600cc
	Cam Shafts - stock, OEM, unaltered in proper location
	Cam Gears - stock, OEM, unaltered bolt holes, unaltered bolts
	Intake & Exhaust Port Areas - "as cast", no grinding, polishing or porting
	Ignition trigger wheel/advancer - stock, OEM, unaltered in any way, CDI box matching trigger
	wheel A.K.A. signal rotor.
	Flywheel - original stock, OEM charging system must be intact, unaltered and in place
	CDI / ECU "Black Box" - stock OEM - unaltered.
	All transmissions gears intact and functional
	No cones in carburetors or air box
	Clutch must be FUNCTIONAL

If you do not understand or have a question regarding the rules please let us know.