Outlaw Kart Rules

All drivers must be 7- 15 years of age. All drivers must have a copy of birth certificate and release form signed
by both parents on file before being allowed to compete.
Specifications
1. Roll cages required. Minimum of 3 inches and maximum of 6 inches above driver’s helmet. Driver must be
covered head to feet. Cage must be mounted by clamping, bolting or welding to frame. A MANDATORY push
bar must be mounted to rear of cage extending out even with the rear bumper. Minimum 12” off of ground,
max. 18”. Must be constructed of same material as roll cage.
2. Cages must be made of a minimum 1” .095 wall tubing or 1” chromoly tubing equivalent to .095 mild steel.
3. 5 hp Briggs and Stratton only. Stock steel 5 hp flywheel only. .30 maximum overbore. Aftermarket rod with a
Max. length of 3.875 may be used. Stock length, stock style piston must be used. Cam lift: .233 cold maximum
lift; .237 hot maximum lift. Engine girdles may be used, not mandatory.
4. Stock Briggs and Stratton carburetors with stock fuel tanks or Tillotson carburetor model #357B off the shelf
box stock “AS CAST” carburetor with EC 440 intake only. No other intake allowed. Swirl and choke may be
removed from stock carburetors. .500 (red in color) Horstman restrictor with NO other modifications…Any
restrictor with RED missing in flow center is ILLEGAL... (May be purchased from track) May be slotted for easy
removal for tech. No fillers may be added to inside of carburetor to change airflow.
5. Stock heads only. No aftermarket heads allowed. No blue printing other than gasket surface.
6. Cylinder deck height--piston .005” out of hole maximum at top dead center. Deck must remain above top of
valve seats.
7. Head gasket must have a minimum thickness of .043 checked halfway between head-bolt holes
8. Karts must weigh 300 pounds minimum with driver.
9. Methanol fuel only. NO ADDITIVES ALLOWED. Random fuel checks will be conducted.
10. All karts must have live rear axles.
11. 5 inch minimum, 6 inch maximum wheels. Racing style, grooved or slick tires only.
12. Friction style clutches only. No axle clutches.
13. Karts must be equipped with nerfing bars.
14. Brakes must be in good working order. Brake pedal must be securely fastened to assure it cannot come
off while kart is in motion.
15. Front and rear bumpers mandatory.
16. Chain guards are mandatory and must cover from front to rear sprocket.
17. Muffler silencers are mandatory and muffler may not extend beyond rear bumper.
18. Karts are to be equipped with throttle return spring to close throttle when released.
19. Front steering shall be of suitable design and in proper order and properly adjusted for maximum safety.
20. Top wings optional. Must be proportional to size of kart.