Ballast

1. Maximum weight: 6,200 pounds.
2. Front weight bracket cannot extend more than 195” from the center of the rear axle. Weight cannot extend more than 65” from the centerline of the front axle. A tab must be welded at the center of the front axle for measurement.
3. Weights must not exceed the width of the vehicle and cannot be placed in the cab.
4. All weight or ballast must be securely fastened.

Chassis and Suspension

1. Only a 1-ton drive line is allowed.
2. OEM frame rails are the only permitted option.
3. Suspension may be block or solid.
4. Air or hydraulic suspension systems cannot have hydraulic, air, or electric lines attached to these devices during competition.
5. Maximum regular cab length: 136”.

Battery

1. Batteries are not allowed in the cab.
2. A manual battery disconnect switch is required and must be easily accessible and clearly marked.

Dress Code

1. DOT-approved helmet must be worn and securely fastened.
2. Fire-resistant coat, pants, and leather shoes are required.

Body

1. Vehicle must retain its original factory wheelbase.
2. Sheet metal must conform to the wheelbase.
3. Full fiberglass bodies are not permitted.
4. Must have an OEM firewall; the bed floor can be removed but must have a bed cover if removed.
5. No mud flaps or dirt deflectors.
6. The bed must replicate the OEM bed; flatbeds are not allowed.
7. The cab must have sheet metal floorboard pans.
8. No full lift or tilt body is allowed. However, the front clip (hood, fenders, and core support) may tilt.

Brakes

1. Must have working front brakes.

Exhaust

1. All vehicles must have exhaust pipes pointing upwards through the truck hood or directly under the cab/ fender. If the exhaust runs to the rear of the truck, it must turn up with an elbow.
2. It is highly recommended that Two 3/8-inch diameter bolts be placed through the exhaust pipe in a cross pattern, within one inch of each other.

Safety Equipment

1. All trucks must have a minimum 6-inch-wide U-joint shield around the rear U-joint, constructed of at least 5/16-inch steel or 3/8-inch aluminum. This shield must safely contain the U-joint and the end of the driveshaft. All shields must be securely mounted.
2. Any front shaft U-joints visible from the side of the truck must be shielded to contain the U-joint and the end of the driveshaft.
3. Axle shields are required, constructed from .060” thick steel or aluminum. A hole may be cut in one shield to allow operation of the hub lock.
4. The safety switch must be securely mounted to the rear of the vehicle. A 2-inch or larger solid ring must be attached to the end of the switch and zip-tied to the switch bracket. The switch must also be operable from the cab while the driver is secured in the vehicle.

Drive Line

1. The transfer case and differential cannot exceed 1-ton capacity.
2. Drop boxes are not allowed.
3. A posi-traction or welded front differential is allowed.
4. Profab 205 quick-change transfer cases are allowed but will be sealed during tech inspection.
5. An SFI bell housing and/or SFI blow-proof bell housing or an SFI blanket-type shield must be used.
6. Traction control devices are not permitted.
7. Automatic transmissions must be covered 360 degrees, from the back of the engine block to the tail shaft bolts.

Tires

1. Tires must be DOT-approved and no larger than 35x12.50 or 315x75 metric.
2. The factory tire size must be stamped for verification. If the size is removed, the tire will be considered illegal.
3. No studded tires, tire chains, or alterations to tires are allowed. Bar or terra tires are prohibited.
4. Dual wheels are prohibited.

Fire Extinguisher

1. All vehicles must have a 2.5 lb. dry chemical fire extinguisher or a 1 lb. Halo extinguisher.
2. The extinguisher must be securely mounted within easy reach of the driver.

Fuel

1. No fuel tanks or fuel lines are allowed in the cab. Tanks may be mounted on the front weight box.
2. Only gasoline or race fuel is allowed. Alcohol and nitrous are prohibited.
3. Fuel may be subject to testing. Refusal to test will result in disqualification.

Driver Restraint System

1. Seat belts are required and must be fastened and worn during competition.

Hitch

1. The hitch must be rigged securely in all directions. No part of the hitch may exceed 3” above the frame rails or extend forward of the centerline of the rear axle.
2. No bolts in the hitch; forged pins must be used.
3. The distance from the point of the hook to the centerline of the rear axle must be no less than 27% of the wheelbase.
4. The maximum hitch height is 26” with a minimum opening of 3.75”x3”.
5. A tab must be welded to the center of the rear axle for measurement.

Engine

1. No cubic inch limit.
2. Any aluminum cylinder head is permitted.
3. Non-OEM aluminum blocks are allowed. If using an aluminum block, 100 lbs. of weight must be placed in the engine bay and visible to the tech inspector. The block must have OEM bore spacing.
4. Single, naturally aspirated 4-barrel carburetors with a 4-bolt Dominator flange are allowed.
5. No split-flange Dominator carburetors.
6. No tunnel rams or sheet metal intakes are allowed.
7. Any make of engine is allowed with any make of body.
8. The rear of the block must be 12” behind the center of the front axle tube.
9. All fans must be shrouded at least 180 degrees on top.
10. A blow-proof harmonic balancer or 360-degree shields are highly recommended.
11. No data loggers allowed.