ROLL CAGE

Roll cages shall be at least 1-inch .062 wall thickness, or 1 1/8 inch .065 wall thickness, or 1 ¼ 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 and 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 inches above the driver’s helmet.  It is mandatory to install a cross brace behind the seat to support the shoulder harness. 

SUSPENSION

Tread; Maximum 50 inches.  Minimum 32 inches, center to center of tires.  Wheelbase: Maximum 70 inches.  Minimum 50 inches, center of front axle to center of rear axle.  Rear wheel drive only.  All suspension bolts except wheel nuts must be secured by some type of locking device.

BUMPERS AND NERFS

Cars 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 designs 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.

ELECTRIC 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.

IGNITION

Stock ignition and coils.  No slotting allowed.

BATTERY

One battery only. All wet cell batteries mounted in the cockpit must be covered and vented outside the cockpit area.

CLUTCH

Must have manual working clutch. Must be mounted inside of roll cage.

TRANSMISSION

Motors must have transmission with all stock gears in working order.  Any car equipped with a shifting mechanism must have this device mounted in the driver’s compartment. 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.  All shift levers should be inside cockpit.

SHOCK

Steel or aluminum shocks only. No adjustments allowed in the cockpit.

BRAKES

No front brakes allowed. Brakes will be of sufficient strength so as to slide the wheels while the car is in motion at any given time.

BODIES

All cars must have complete 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 .0625” aluminum.  Body of car must be made of aluminum, metal, fiberglass or high impact plastic.  All cars must be an attractive color or colors.  No rear view mirrors allowed.  The only part of the car allowed to be dismantled for driver to enter or exit is a quick release steering wheel hub.  Mudguards must be made of aluminum or fiberglass, and can be no less than 16 inches from the top of the cage.  No mechanical, electrical or hydraulic adjustments will be allowed in the cockpit area.  All fuel tanks must be equipped with a one-way check valve designed to prevent spillage of fuel in the event of a rollover.

MUFFLERS

Mufflers are mandatory and must keep the car at 95 decibels or less. No super trapps allowed.

NUMBERS